(Get it?) 

Monoman has a T.V in the man entrance. A live video played with everyone's loved ones including Ben tied up in a chair. Two saws turn on as they slowly move towards them. "If no one kills in 12 hours then your family will be sawed in half" said the Monoman. 

Group 1: 9, 13, 16, 6, 8

Group 2: 1, 7, 2, 14

Grouo 3: 5, 15, 12,