Irish star joins serial killer thriller.

‘Seven Psychopaths’ star Colin Farrell has been cast opposite Anthony Hopkins in the long-in-development serial killer thriller ’Solace,’ reports Deadline.

An FBI detective seeks the help of a retired and reclusive doctor (Hopkins), to try and solve a series of grisly murders. The doctor was a wiz at the murder game, but lost his mojo when his daughter died tragically. Desperate, the detective presses the doctor to come out of retirement for one more case.

Deadline has Farrell taking the role of the serial killer with the detective yet to be cast.

Production is set to begin in May with Afonso Poyart (‘Two Rabbits’) directing from a screenplay penned by Sean Bailey and Ted Griffin, with rewrites by James Vanderbilt and Peter Morgan.