Devil's Den (2006)

Plot

Quinn Taylor and his buddy Nick return from Mexico, eager to peddle Spanish Fly in the U.S. Their journey takes a detour to The Devil's Den, a gentlemen's club where they plan to experiment with their product on the unsuspecting patrons. However, they soon discover that these women harbor a deadly secret— they aren’t human. As chaos ensues, a fierce female assassin also targets Quinn, adding to the peril. With a monster hunter on the prowl, the stakes escalate, leaving the duo in a life-or-death struggle.