Six Four is a 2023 British crime thriller television series set in Glasgow and Edinburgh starring Kevin McKidd, Vinette Robinson, Alex Ferns and James Cosmo.

Gregory Burke is script writer executive producer alongside Juliette Howell, Tessa Ross and Molly Bolt.

It is a story about how chance can define a lifetime, exploring the corruption that runs through institutions, and examining the secrets and monsters that lurk in every family.”[4] The adaptation moves the setting from Kyoto in Japan to Glasgow, Scotland with the main character’s name changing from Mikami to Chris.

In many of these situations the same dilemma is at their core; to what is the individual within the institution loyal, and does that loyalty inevitably lead to a compromise with the truth.”[5] Kevin McKidd and Vinette Robinson were revealed to be cast as Chris and Michelle O’ Neill in May 2022.

[11] Charlotta Billstrom awarded the series four stars in the Evening Standard, saying, "The cast deliver excellent performances" and "It’s tightly plotted too, and filler-free, making for four powerful episodes full of twists and turns.