---
title: "Diabolical"
year: 2018
canonical_url: "https://www.archytele.com/show/diabolical-2018"
media_type: "tv"
tmdb_id: 107854
imdb_id: "tt3420210"
status: "Returning Series"
seasons_count: 3
episodes_count: 30
runtime_minutes: 42
community_rating: 8.0
vote_count: 2
content_rating: "TV-14"
---

# Diabolical (2018) — Television & Cinema Intelligence Dossier

> **Archytele Living Vault Canonical Record**: https://www.archytele.com/show/diabolical-2018

## Executive Summary & Cultural Positioning

Topic: Television series "Diabolical" (2018).
Role: Meticulous television and film archivist.
Constraints:
Use ONLY verifiable facts from provided SYNOPSIS and SOURCES.
No inventions (names, dates, counts, awards, ratings, etc.).
No markdown, asterisks, headings, or bullet points.
Neutral, encyclopedic prose in plain text.
Word count: 150-190 words.
First sentence must not contain spoilers.
Sources analysis:
[1] TMDB: "Diabolical (2018)", TV-14, Crime and Documentary. Synopsis: Docuseries delving into the minds of murderers, asking "Why did they do it?". Acts committed with extreme premeditation. Law enforcement taps into methods of masterminds with insights from forensic psychologists.
[2] IMDb: "Diabolical (TV Series 2018–2020)".
[3] TMDB Cast/Crew: Repeats synopsis.
[4] Variety: "'The Boys: Diabolical' Trailer". Voice cast: Awkwafina, Michael Cera, Don Cheadle, Chace Crawford, Kieran Culkin, Giancarlo Esposito. Produced by Amazon Studios and Sony Pictures Television Studios, with Titmouse, Kripke Enterprises, Original Film, and Point Grey Pictures.
[5] Screenrant: Mentions Kieran Culkin.
[6] Dateline NBC: Irrelevant (mentions "diabolical scheme" in a different context).
*

## The Hook & The Verdict

## Streaming Availability Matrix

| Region | Stream (Subscription) | Free / Ads | Rent / Buy |
| :--- | :--- | :--- | :--- |
| **United States (US)** | HBO Max Amazon Channel, Philo, Discovery+ Amazon Channel, YouTube TV, Investigation Discovery, HBO Max, Discovery + | Spectrum On Demand | Amazon Video, Apple TV Store, Google Play Movies |
| **United Kingdom (GB)** | Discovery+ Amazon Channel, Discovery+ | None | None |
| **Canada (CA)** | Discovery +, Discovery+ Amazon Channel | None | Apple TV Store |

## Key Cast Continuity

- **Ross Huguet** as *Narrator (voice)*
- **William Cataldo** as *Self - Assistant Prosecutor, Macomb County, MI*
- **Kerrie Droban** as *Self - True Crime Author*
- **Leslie Rule** as *Self - Co-Author, 'Lying in Wait'*

## Canonical Frequently Asked Questions

### Q: Where can I stream or watch Diabolical online?
Diabolical is currently available to watch or stream on HBO Max Amazon Channel, Philo, Discovery+ Amazon Channel, YouTube TV. Check our live regional availability tracker above for latest direct streaming, subscription, rent, or purchase options.

### Q: Is Diabolical worth watching?
Diabolical holds a community rating of 8.0/10 based on 2 verified viewer ratings. It offers engaging Crime, Documentary for fans of the genre.

### Q: How many seasons and episodes are in Diabolical, and how long does it take to binge?
Diabolical spans 3 seasons and 30 total episodes. A complete watch takes approximately 21 hours (at an average of 42 minutes per episode).

### Q: Which episodes of Diabolical are essential mytharc vs. filler?
Our interactive episode classifier tags all episodes of Diabolical by narrative importance: Crucial Mytharc (season premieres, finales, and canon turning points), Character Core, and Side Quest / Filler. Use our interactive checklist above to filter out standalone detours.

## Grounded Source Citations

- [Diabolical — The Movie Database (TMDB)](https://www.themoviedb.org/tv/107854)
- [Diabolical (TV Series 2018–2020) - Full Cast & Crew - IMDb](https://www.imdb.com/title/tt8293276/fullcredits/cast)
- [Diabolical (TV Series 2018- ) - Cast & Crew — The Movie ...](https://www.themoviedb.org/tv/107854-diabolical/cast)
- ['The Boys: Diabolical' Trailer: Simon Pegg Plays Hughie](https://variety.com/)
- [The Boys: Diabolical Cast - Every New Voice Actor Confirmed](https://screenrant.com/the-boys-diabolical-new-voice-actors-cast-confirmed/)
- [Dateline NBC - Series - TV Tango](https://www.tvtango.com/series/dateline_nbc)

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*Generated by Archytele Open Intelligence Systems. Data verified against TMDB and JustWatch APIs.*