Richard Stark 
Dirty Money 

Only one thing could drive master thief Parker to return to the scene of a crime – the bags full of cash he was forced to abandon when his last heist turned sour. The race is on to reclaim the loot, before dark forces on both sides of the law can swoop in for the kill.Masquerading as a choir, his gang is anything but holy, and Parker, remorseless as ever, will stop at nothing to redeem his prize