Kill List
(2011)

The clients for the contract killings turn out to be part of cult/sect involved in human sacrifices.

Jay and Gal have been set up to remove members who've become involved in child molesting/sex slavery They lure both hit-men into a trap, whereupon they both have a run in with several of their more fanatical members. Gal is fatally injured by the cultists/sect, and Jay is forced to finish him off.

Jay flees home, only to find cult/sect members have followed him back to his house. They have been stalking both men during their jobs.

Jay is forced into a fight to the death with one of their hooded hunchback members, who, on dying, is revealed to be Jay's wife, with their son tied to her back. 

Thanks ND Woods!

IMDB