Whats that film called?

Thes this film i think bruce willis is in it, and him and his friend kidnaps this little boy and the the friend is an idot to the little boy, so bruce kills him and looks aft the kid buying him a halloween costume, an on the run from the police, i think samuel l . jackson is in it . at the end bruce is sot an l;ets the b o but under one condition that the mothe lets the boy got to fun fairs and go trick or trea.t