El canto de la gitana (2011)

A man walks down the toilet with a portfolio, after urinating; a murderer opens the door and kills the man with one shot. A beautiful woman singing enters to the same bathroom, the murderer leaves the cubicle and embraces her, pressed against him, the murderer asks to her about the payment for the killing, the woman tells him it was deposited in the bank. The couple enters the cubicle and have sex, do not see, but listen, one shot, one dead again, will the same murderer?