Found this by chance last night. Seems to have just about everyone who has ever been in a tv series in it, including Josephine from Spiral and Nasreen from Ackley Bridge.
I think it is a US production. Everyone looks really plastic with layers of make up and bizarre hair styles.
See from threads in 2018 (when first shown) that some found it gripping.
So for anyone short of a crime series and and ins't on Netflix www.channel5.com/show/harlan-cobens-safe/