it wasn't me, im being suspected!

A group of local cops found a dead body. There's only one person who can be Suspected... The Suspected's goal is to be sneaky by killing everybody or escaping to an exit while the Detective hunts him down. The Detective has special gear to help, like Handcuffs or Blood Tester, while the Innocents do nothing as usual, or they can find guns and help the Detective or cause more choas. Pretty unique concept, right?