The Collection (2012)

Elena Peters goes to a party with a group of friends. In an isolated room, Elena finds a wooden trunk in which Arkin from the previous film is trapped. Elena opens the latches, releasing Arkin and unknowingly setting off a series of booby traps, killing her friends and dozens of other party-goers. The Collector appears and kidnaps Elena, while Arkin escapes by jumping out of a window, breaking his arm in the process.

Arkin is taken to the hospital, where he learns that his wife and daughter are safe. He is approached by Lucello, an employee of Elena's wealthy father, who has hired a team of mercenaries to hunt the Collector down and save Elena. Lucello implies that if Arkin leads them to the Collector's hideout, he will expunge Arkin's criminal record.

Arkin leads the mercenary group to the Collector's base in an abandoned hotel. Meanwhile, Elena escapes from the trunk in which she was locked. Upon the team's arrival, Arkin refuses to go inside, but Lucello forces him at gunpoint to guide them through the hotel. The Collector arrives and learns that Elena has escaped before being alerted to the team's presence. Lucello's team is attacked by people who the Collector has driven insane through torture and drugging. Elena encounters a girl named Abby, who pleads for help. However, Abby learns that Elena uses a hearing aid, which she believes will place them at a disadvantage; they are subsequently separated.

Elena and Lucello reunite and find Abby, who asks to escape with them. Despite Elena not trusting her, Lucello allows Abby to accompany the group. Realizing they are trapped inside, Arkin non-fatally shoots a homeless man through a window in order to draw the police's attention. Abby sabotages their efforts of escaping before being killed by one of the Collector's traps. The Collector finds them and becomes enraged upon seeing Abby's body. He attacks the group, grabs Elena, and escapes.

As police converge at the hotel, the lights go out throughout the building; Lucello is caught in a trap and has to be left behind, while the rest of the team is eventually killed off. Arkin finds Elena, but they become trapped in a booby-trap cage. Arkin manages to open the cage by having Elena re-break his arm so that he can reach the latch.

They find an exit door to the building, but it is jammed from the outside. The Collector appears and just as he is about to kill Arkin, Lucello intervenes, having escaped from his trap, and sacrifices himself so that Arkin can gain the upper hand. Arkin beats the Collector and sets him on fire. Elena and Arkin escape as the building burns down. Arkin finds the Collector's burned mask and realizes he escaped.

Sometime later, Arkin manages to deduce the Collector's identity by researching registered entomologists within a 200-mile radius. Arkin confronts the unmasked Collector in his home at gunpoint, announcing his intentions to torture and kill him. When the Collector tries to fight back, Arkin forces him into a wooden trunk and locks him inside, trapping him.