 
 <translate> To answer the question, consider the following: When Dave finally admits to killing Katie thinking he can escape with his life, Jimmy kills him and disposes of his body in the adjacent Mystic River.
Therefore, the answer is Dave. <hau> Don ka amsa wannan tambayar, ka yi la'akari da wannan: Sa'ad da Dave ya yarda cewa ya kashe Katie yana tunanin cewa zai iya tsira da ransa, Jimmy ya kashe shi kuma ya zubar da gawarsa a Kogin Mystic da ke kusa. Saboda haka, amsar ita ce Dave. 