Whodunnit? unveiled "the killer" and determined a winner among the four remaining guests during Sunday night's finale broadcast of the new reality mystery competition.

Kam Perez, a 30-year-old homeland security attorney from New York, NY, was declared the winner of Whodunnit? after discovering "the killer" responsible for "murdering" all 11 guests this season was Cris Crotz, a 27-year-old former beauty queen from Costa Mesa, CA. Kam therefore survived the season and walked out alive with a grand prize of $250,000.

In addition, Melina Alves, a 29-year-old flight attendant from Chicago, IL, was "killed" at the beginning of last night's episode followed by the season's runner-up investigator Lindsey Anderson, a 27-year-old engineer from Boston, MA, who was shown being "killed" at the finale's conclusion.

"Are you kidding me?! I was sure it was Lindsey, I can't believe this. I've been working with the killer the entire time," Kam said upon his victory.

"I'm so busy going over pretty much everything I've ever said to Cris. There's no room to process the fact that I just won a quarter of a million dollars. This is a life-changing amount of money. I can't even conceptualize $250,000 and now I'm holding it in my hands. I don't know what to do with it. I survived this thing. I went up against very fierce competition. I came out ahead. Even when the money's gone, the pride that comes with that is going to last forever." 

Whodunnit?'s finale broadcast began with the four remaining guests being shown a television clip in which the butler Giles was tied up with guns surrounding his head. Giles instructed the group to search for him or else he would die and they would share a similar fate.

Melina then disappeared in a cloud of smoke that filled the mansion's first floor. A recorded voice message led Kam, Cris and Lindsey to find Melina "dead" in a room with beads around her neck from which she was bleeding.

Afterward, the Final 3 were greeted by all the zombie bodies of the guests who had previously been "murdered." Kam, Cris and Lindsey were then required to participate in a final challenge.

For the challenge, each guest had to run to a different "dead" person located around the mansion and solve a riddle or complete a task with the hopes of getting it correct and receiving a puzzle piece in return. Their puzzle pieces fit into the shape of a large question mark, and once filled out, the guests would learn whether they had made mistakes which needed fixing or nailed all the riddles. Once the question mark was correctly filled, that person would receive a key to open a room that would feature the killer.

Kam solved his puzzle and opened the door to the room first, but he found no one. Cris ran into the room shortly after him and suggested there was another riddle they both needed to find and solve. The couple then witnessed Lindsey's "murder," as she entered the room and got stabbed with a bow shot into her neck. At that moment, Kam and Cris confronted one another with their suspicions.     

"I won't be played by your foolish game. The killer could be you," Cris said to Kam.

"The killer is you!" Kam interjected.
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"Or me, just the same," Cris noted with a smile.

"It's definitely you," Kam said. "Are you kidding me?"

"Enough of the riddles, the ruckus, the rhymes. I committed those murders 11 straight times," Cris explained. "Surprise! I'm the killer. I'm the one you've been looking for."

"Are you kidding me right now?!" a shocked Kam said.

"It is true. I am the real sinner. Congratulations, Kam. You are the winner!" Cris told him.

Giles then entered the room.

"Yes, it's true Kam! You have unmarked Whodunnit?. Please take these golden cuffs and arrest Cris, the real killer! Who would have known?" Giles said, presenting Kam with a briefcase filled with cash. "You've done it Kam. You have won. You are the killer's most worthy adversary. How does it feel?"

"I'm freaking out," Kam said.

"And, you're alive!" Giles exclaimed while hugging the winner, who was "shaking like a leaf."

The finale broadcast concluded with "police" arresting Cris and the mansion being vacated.