"Guess Who; The Movie"
It's 1970's America, two detectives; detective Peter Van and detective Orlandi Augymubeng, have 4 hours to match a face of the Crescent Moon Killer. Luckily, an evil mastermind known as "Billy the Pre-Teen" has contacted them via Skype.
Only Billy knows the true face of the killer. But as per usual, Billy don't play fair, the agents have to test their brains and indeed minds to knock down 23 photographs of potential murderers and find the 1 photo that pictures the actual murderer.
Augymubeng did it, he was sick of being the only Ghanian detective and felt throughout his career that he was being limited to how far he could advance due to the prejudice 1970's America had against Black police officers so he committed the ultimate crime, and then he was going to solve it and become the most decorated detective in the world, and he would've got away with it too if it wasn't for that pesky pre-teen!
(By the way, there was a Guess Who PC game
Guess Who ? (PC CD): Amazon.co.uk: PC & Video Games )