At the end of Taking Lives we see that it was James Costa aka Martin Asher who is the real killer. But by that time this is discovered he has had sex with
manichitrathazhu
endeavour
johnny-mnemonic
ghostbusters-2
pitch-perfect
whiplash
altered-carbon
the-general
phone-booth
a-tale-of-two-sisters
the-disappearance-of-eleanor-rigby
analysis
breaking-the-waves
locked-up-abroad
comic-adaptation
empire
the-event
definitely-maybe
streets-of-fire
the-blind-swordsman-zaitochi
under-suspicion
dream-house
miami-vice
monte-walsh
the-longest-yard-2005
naruto
dreamcatcher
poltergeist-2015
somewhere
begin-again