Compulsion

A bleak opening with Jenny (Leanne Best) contemplating suicide by train due to gambling-induced financial problems. During a panic attack onboard, recently bereaved Sasha (Anna Chancellor) helps her and they strike up a relationship. Things quickly spiral out of control for Jenny and it is unclear whether Sasha is a guardian angel or a psychotic demon.

After episode one, I am torn on this - it is either a tightly-written well-acted psychological thriller with interesting twists or it is whiny derivative drivel of the type we see frequently now. Best and Chancellor are fabulous actresses so I await episode 2 before passing final judgement.

Addendum: Skim watched to the end and it is poor with the worst ending imaginable - rescored from 6* to 4*