The sleepy town of Graham, WA, gets a jolt in November 2007 when young newlyweds Brian and Beverly Mauck are found shot to death in their rural home. Leads from friends and family send police on a wild goose chase, but cops soon find out one helpful tipster is the ruthless killer.

The quiet town of Tomahawk, WI, is rocked when long time resident 42-year-old grandmother Tracy Maurer is found brutally stabbed to death in her home. Police have a laundry list of suspects but it's a tip from the rumor mill that finally brings closure to the case.

In 2006, Christmas cheer hits an all-time-low in Hubbardston, MI when 80-year-old Billie Cunningham is found murdered in her home. Years pass as police search for a vicious killer. But it turns out the shocking confession is well worth the wait.

When friendly cashier Tammy Petrin is found shot execution style at the local burger joint in 1991, the town of Woonsocket, RI, is in shock. After lead suspects don't serve up answers, a helpful hooker and letters from jail might be just what detectives ordered.

When a sip from the office water cooler turns deadly for secretary Julie Williams in 1986, detectives in Tempe, AZ are stumped. Who could have had it out for this sweet single mom? Investigators search for the mystery mixologist and are shocked at who they stir up.