Doc Savage Double Novel Volume 79 Devils Of Deep

"The pulp era's legendary superman returns in thrilling maritime mysteries by Harold A. Davis and Lester Dent! First, with a million-dollar bounty on his head, Doc Savage hunts for the 'Devils of the Deep' after international ships are seized by a mysterious 'sea monster.' Then, modern-day piracy is suspected when the Navy's newest submarines disappear in 'Five Fathoms Dead,' but where is the Man of Bronze?"