The Lonely Detective Gets Angry And Other Nasty Mysteries: 13 New Hilarious Nasty 'Who Done Its'

Are you bored with characters who are too good or too evil to believe, tired of plots about threats to the world by sinister evil gangs, tired of the obligatory sex scenes? Welcome to 13 everyday nasty type people talking hypocritically and doing despicable things leading to murder. Can you solve these 'who done it' murders, given sufficient clues?