Sidney Toler is excellent (Film Daily) in his first outing as the celebrated Charlie Chan, in this fast-paced murder mystery about a ship bound for San Francisco... that takes a murderous detour to Hawaii! As the incomparable investigator awaits the birth of his number-one grandchild, his own scheming sons try to fill their fathers shoes by solving a high-seas murder mystery on their own. But when a second victim is found strangled, it's up to Chan to tie up the boat and eventually the murder case in this thrilling, ship-shape adventure!