Charlie actually gets some help from his hyper number one son Lee (Keye Luke).
In Australia a horse owned by Charlie’s friend Major Kent loses a big race when jockey Tip Collins (Frankie Darro) obviously fouls another horse. He was paid off by a gambling syndicate. Kent sends a telegram to Charlie telling him to meet a boat in Honolulu. Kent is bringing the horse Avalanche to compete at Sana Juanita in L.A. Kent is killed on the boat when Avalanche kicked him.
Charlie investigates and proves it was murder. Kent’s son-in-law George Chester receives a threatening note telling him not to run Avalanche. Notes are also delivered to Warren Fenton (Jonathan Hale),a competitor and several others. A fire breaks out in the stable and Charlie figures out it was a cover so Avalanche could be switched with Fenton’s horse Gallant Lad.
Now it’s the day of the big race. the syndicate isn’t done yet in their efforts to control the finish. With Lee’s help Charlie figures it all out. This is a pretty good entry in the series and well worth checking out.