Brief synopsis of Thriller

The main  character in the thriller called Marcus, he is a mysterious, quiet and brutal character. He works for an agency which deals with targets ready for assassination. His boss (unnamed) gives him a target that he must kill, Marcus meets his target to find out her daily routine, but while conversing with her, he falls in love with her and has a dilemma over whether he should assassinate her or not. His boss has given him an ultimatum of whether to kill his lover or to be killed.  This all culminates in a climactic ending in which both our main characters are killed.