

Overview
Like trying to decipher the value of a book without ever opening it, judging a person by his or her outward appearance can be a mistake. Someone may look perfect on the outside, but even the most kind-hearted soul has a dark side looming. "Diabolical" is a docuseries that delves into the minds of murderers, asking a simple question: "Why did they do it?" The acts were committed with extreme premeditation -- many were months or even years in the making. Tension builds in each episode as law enforcement taps into the methods of devious masterminds, aided by insights from forensic psychologists and psychiatrists as well as criminal profilers.
Cast
4Open an episode for ages at its air date.
- TMDB ID
- 107854 ↗
- First aired
- 2018-01-01
- Last aired
- 2020-05-12
- Status
- Returning Series
- Episode runtime
- 42 min
- Genres
- Crime, Documentary
- Creators
- Unknown
- Countries
- CA, US
- Languages
- English
Family guidance
Age ratings
18Spain (ES)
Not recommended for viewers under the age of 18.
18France (FR)
Not recommended for persons under 18. Allowed between midnight and 5 a.m. and only in some channels, access to these programs is locked by a personal password.
TV-14United States of America (US)
This program contains some material that many parents would find unsuitable for children under 14 years of age.
TV-MAUnited States of America (US)
This program is specifically designed to be viewed by adults and therefore may be unsuitable for children under 17.
Does the Dog Die?Community yes/no votes · series-wide
Loading community votes…
Kids-In-MindEditorial 0–10 ratings
Kids-In-Mind rates movies, not TV series. This says nothing about the content of this series.
All regional certifications (11)
18Spain (ES)
Not recommended for viewers under the age of 18.
18France (FR)
Not recommended for persons under 18. Allowed between midnight and 5 a.m. and only in some channels, access to these programs is locked by a personal password.
TV-14United States of America (US)
This program contains some material that many parents would find unsuitable for children under 14 years of age.
TV-MAUnited States of America (US)
This program is specifically designed to be viewed by adults and therefore may be unsuitable for children under 17.
14Brazil (BR)
Content suitable for viewers over the age of 14.
18Germany (DE)
Can be aired only from 11:00pm Uhr to 6:00am.
12Ireland (IE)
12A - No-one younger than 12.
12Netherlands (NL)
Take care with children under 12.
9Norway (NO)
Allowed at all times.
Från 15 årSweden (SE)
No additional details available.
18+Turkey (TR)
Suitable for ages 18 and over.