Case Closed (1996)

Season 11

Episode 15: Kanmon Strait of Friendship and Murderous Intent (Part 2)

The rude man is found dead, hit on the head with a rock. Mouri immediately suspects the 4 friends who all had motives, but when he questions them they all have alibis. One of the woman snaps though and admits to killing him, but Conan reveals with his deductions that she only knocked him out. It was the man with the business who killed him.