World of Secrets: The Darkest Web – Episode 4: Undercover

Podcast: World of Secrets (BBC)
Date: March 9, 2026
Host/Reporter: Sam Piranty
Featured Agents: Greg Squire & Pete Manning

Episode Overview

This episode of World of Secrets dives into the covert world of undercover investigations into child abuse rings on the dark web. BBC journalist Sam Piranty follows special agents Greg Squire and Pete Manning as they penetrate highly secretive online spaces to identify offenders and rescue children. The episode reveals the psychological, technical, and emotional toll of undercover work and details the evolving tactics on both sides of this digital cat-and-mouse game.

Key Discussion Points & Insights

The Challenge of Infiltration and Undercover Work

• Sophisticated Barriers to Entry:

  • Agents face extreme challenges, as the only way into many groups is to prove access to a child—something law enforcement obviously cannot do.
  • Pete Manning (02:28):

    “Can you imagine trying to infiltrate like a gang or a mob where you know, the only way you were admitted entrance is if you were to sexually abuse a child? ... How do you infiltrate a group with such an exclusive, you know, membership criteria?”

• No Typical Profile of Offenders:

  • There is no “type” among abusers; they come from varied backgrounds and professions.
  • Pete Manning (03:19):

    “This type of crime really spans international borders. It spans religions, it’s races. There’s no way to pin down a specific type of person that does this. It really is pretty broad.”

Crafting an Undercover Identity

• Becoming ‘One of Them’:

  • Greg outlines how he needed to develop a believable persona, learning specialized lingo and recognizing the internal hierarchy of online offenders.
  • Greg Squire (06:31):

    “In trying to build this new person...I was trying to factor in a balance between effectiveness and what role I could be kind of in this, in this community. ...you had to learn this collection of characters like each one having a role, each one expecting you to respect that role...”

• Technical Expertise of Offenders:

  • Many offenders possess high-level tech skills, enabling them to evade detection and organize with remarkable sophistication.
  • Pete Manning (07:29):

    “A large majority ... had some sort of technical expertise...it’s amazing at, if you have an obsession for something, how you can find the energy to learn very technical processes and things that normal people can’t do.”

The Dark Web Community Structure

• Community Organization:

  • Forums are tightly organized, with entire subforums for specific preferences, guides for evasion, and even news coverage sections.
  • Greg Squire (08:23):

    “They had the news covered, they had technology covered, they had communication covered, they had recruitment covered. Organized right down to boys versus girls, hardcore versus softcore, guides and tutorials...”

• Constant Growth & Activity:

  • Offenders invest immense time—often more than a full-time job—maintaining these forums and generating new material.
  • Greg Squire (10:09):

    “This was life for them. They were putting 40, 50, 60 hours a week into this community.”

• Category Proliferation:

  • Forums feature disturbing subcategories, meticulously subdividing preferred material by age, gender, and type.
  • Greg Squire (12:31):

    “The first division would be boys and girls...then, oh, I only want to see babies...videos only, photographs only, spy cameras only...it wasn’t weird to see 20 different subsections on these sites.”

Law Enforcement’s Evolving Pursuit

• Abuser Countermeasures:

  • Communities adapt to law enforcement by increasing security, sanitizing data, and developing closed, producer-only sections.

  • Pete Manning (14:33):

    “The child sex abuser community adjusts to the techniques used by law enforcement.”

  • Pete Manning (15:23):

    “Producers would get special treatment...they started making sections...only accessible to other producers. And you had to prove that...by taking very specific pictures or images.”

The “Twinkle” Case Study (18:22–26:30)

• Identifying a Key Offender:

  • Agents spot “Twinkle,” a new admin operating “Baby Heart,” a site dedicated to infant abuse—a new and horrifying scale for even seasoned investigators.
  • Greg Squire (20:00):

    “That was the first time we saw a infant dedicated dark website. It wasn’t like we hadn’t seen the abuse before, but...not the scale before. So Twinkle was the self-professed operator of the site...naturally he became a person of great interest.”

• International Collaboration:

  • The search for Twinkle involves transnational teamwork via a “Global Working Group” of agents sharing intelligence around the clock.
  • Greg Squire (21:31):

    “We were having real collaboration amongst multiple countries...having 24 hour coverage to make sure if something happened while the Europeans were asleep, then the Australians were able to give them that information.”

• Breakthrough with “Sassy’s Black Book”:

  • Brazilian authorities share a seized “black book” from another producer, Sassy, containing incriminating real-world details and similar editing styles—such as emoticon-covered images and a distinctive skin condition (vitiligo) matching Twinkle’s real identity.

  • Pete Manning (23:56):

    "Literally, it was unique in that [Twinkle] had this skin color gradient to it. It’s very subtle...parts of the fingers were very white where the rest of the hand was darker."

• Linking Online Evidence to Real-World Identity:

  • Through close networking and forensics, they confirm Twinkle’s real name and ties to Portugal.

Personal Toll and Human Context

• Greg Balancing Two Worlds:

  • The psychological impact of leading a double life becomes clear, with Greg struggling to separate his undercover identity from his personal life.
  • Greg Squire (11:21):

    “That time frame, it was a majority of my identity...for me, I was just thinking about the job almost full time.”

• Family Perspective:

  • We hear Elisa’s perspective as she becomes concerned about her brother’s relationships and life trajectory, highlighting the real-world impacts and warning signs that may go unnoticed.
  • Elisa (27:09):

    “Our contact was limited. I maybe saw him three or four times a year...I think I started to feel more pressure for those relationships and those connections because of my mom and because she was kind of more of a part of my life at that point. But I mean, I know that there are probably red flags. If I thought somebody would have seen it, it would be my mom.”

Notable Quotes and Memorable Moments

• On Profiling Offenders:
  Pete Manning (03:19):

  “Give it days or weeks and we break that profile in pieces again. This type of crime really spans international borders.”

• On Community Organization:
  Greg Squire (08:23):

  “Organized right down to boys versus girls, hardcore versus softcore, guides and tutorials. Everything from, you know, what barriers are you facing to come join us down to, oh, if you’re gonna have a Mac machine, you want to do this...”

• On the Psychological Toll:
  Greg Squire (11:21):

  “When I was home and with my kids, I tried to be a dad... but that doesn’t mean I wasn’t thinking in the background or looking at my phone and trying to manage both worlds.”

• On Law Enforcement Cooperation:
  Greg Squire (21:31):

  “We were having real collaboration amongst multiple countries...really a 24 hour clock.”

Timestamps for Important Segments

• [02:28] – Pete Manning describes the impossible criteria for gaining forum access: “How do you infiltrate...where the only way you were admitted entrance is if you were to sexually abuse a child?”
• [06:31] – Greg Squire on building an effective undercover persona.
• [10:09] – Greg describes the obsessive dedication and time investment of abusers.
• [14:33] – Pete talks about community countermeasures in response to police tactics.
• [18:22] – Case of “Twinkle” and the emergence of “Baby Heart” site.
• [21:31] – Greg explains the Global Working Group and its collaborative efforts.
• [23:56] – Forensic clues: Twinkle’s skin condition leads to a breakthrough.
• [27:09] – Elisa reflects on her brother and the subtle warning signs in family dynamics.

Tone & Storytelling

The episode is grim, methodical, and somber—matching the gravity of the subject. Both agents narrate their experiences with a mix of clinical detail and underlying personal strain, while Sam Piranty guides listeners through unsettling realities without sensation or dramatization, but rather with clear-eyed, urgent investigative intent.

This episode leaves listeners with a sense of the scale, complexity, and personal cost involved in fighting online child abuse—and the tireless, innovative work of those committed to ending it.