Heartbeat: It Came From Outer Space

An explosion in the woods is linked to the activities of a villain working out of a local quarry. Rachel suspects the owner of supplying dynamite to armed robbery gangs, so Joe goes undercover to infiltrate the workforce - but ends up in mortal danger when his cover is blown. Meanwhile, Peggy sees an opportunity to make money when rumours abound that a meteorite caused the blast. Guest starring Bill Ward and Graeme Garden