One stormy night, adventurous teens Skip, April, and Augie─plus their dog Elmo─find and reset a broken grandfather clock, only to free two ghosts trapped inside: Revolutionary War-era coward "Muddsy" Muddlemore and his cat Boo. Now free, the phantom pair teams up with the crime-solving kids to crack some mind-boggling mysteries in this Hanna-Barbera cartoon, which aired from 1971-72. All 17 episodes─including "Heir Scare," "Who's Chicken," "Spirit Spooked," "Haunt in Inn," and "Ghost Grabbers"─are featured in a four-disc set. 8 1/2 hrs. total. Standard; Soundtrack: English Dolby Digital mono. 17 episodes on 4 discs. 8 1/2 hrs.