The media has become fascinated by an unorthodox killer being referred to as The Tormentor on account of her method of placing her victims in deathtraps that are escapable... in theory. Why she does this is still being investigated, but people are dying and now you find yourself in one of her deathtraps... 

Marrek Warehouse is a mid-sized warehouse that handles shipping and fulfillment for a variety of department store brand catalog sales. The operators have won awards for the efficiency of their floor layout and particularly the formation of the pallet racks. The warehouse security system is state-of-the-art with a timed locking and unlocking mechanism for all of the exits including the bay doors. The management (or whoever is in charge, ahem the killer) can control everything both coming  into, and leaving, the warehouse.