Ricochet

Anton an assassin searches for Heather, while killing the dregs of society, while competing with Steven, their relationship transforms; enemies, mutual respect, mentor/student, then a misunderstanding and Anton kill Steven. Anton finds Heather who reveals they have a son, Steven. Anton is crushed, he killed Steven. He can not tell Heather. Anton kills his handler Sergei then disappears to the desert - and into a sequel.