stolen 2008 Cannondale Six13

Last night my yellow Cannondale Six13 was stolen off the back porch. The thief moved roommates bike out of the way (that was leaning against my bike) and took it. This bike is worth $1300 so although it is not terribly expensive, it is still a hefty loss. The bike has been there for 7months along with other (more) expensive bikes without incident and the backyard is relatively private. Bike description: 51cm, Shimano Tiagra/Ultegra components, 700cc wheels that say "Aero", Cervelo seat, yellow frame with black “six13” stickers. Shimano clips