An art thief must survive an auction where a masked killer hunts the bidders for their secret sins.

Agreed with the above comments.

Also the action the antagonist takes, or in other words what the main character is trying to prevent is unclear. What does hunt them for their sins mean? Is the killer killing them or stealing their memories of their sins? Obviously you mean the killer is killing, but the logic of a killer walking around a crowd killing them with out any body noticing or acting to stop him or her doesn't make much sense.

And why would a movie audience be rooting for the art thief to survive? ?Seems like he has it coming to him.

And if the killer is masked, wouldn't he immediately stand out in the crowd of bidders, raise an alarm? ?Shouldn't he be skulking around unobtrusively, nothing special to draw attention to him or raise alarm?

And why would a movie audience be rooting for the art thief to survive? ?Seems like he has it coming to him.

And if the killer is masked, wouldn't he immediately stand out in the crowd of bidders, raise an alarm? ?Shouldn't he be skulking around unobtrusively, nothing special to draw attention to him or raise alarm?