The Secret of the Caves

In "The Secret of the Caves," the seventh installment in The Hardy Boys mystery series, brothers Frank and Joe Hardy, along with their father Fenton, take on a chilling case involving the mysterious disappearance of Professor Morgan Todd from Kenworthy College. While Fenton is busy securing a coastal radar station under construction, the boys delve into what seems like a simple absence, discovering tantalizing clues that lead them to the enigmatic Honeycomb Caves in Rockaway. Their investigations unveil a sinister plot that threatens the radar station's operation, propelling them into a thrilling adventure.