S2·E12 Uninvited Death
Aired March 12, 1956
Synopsis
Sky and Penny unwittingly become involved in sabotage when they visit their friends Major Dave and Denise McKay. An enemy agent has attached a time bomb to Major McKay's car, setting the fuse to explode while the Major is working at an army special-projects base. When Denise and Penny borrow the Major's car, they are placed in grave peril.