****SPOILER**** Special police consultant Robert T. Ironside, Raymond Burr, gets knee or better yet waste deep in a robbery that took place in the closing days of WWII in Northern Italy. It was during the confusion of the fighting there that six US Army Rangers knocked off a currency exchange office and took off with some two million dollars in US dollars and gold coins. Now some 20 years after the war ended one of the Rangers 66 year old Kim Soo died of natural causes that soon lead to a chain of events that lead to George Billingham, another of the US Army Rangers, mysterious death when he was electrocuted as he took an evening dip in his swimming pool.
It's Ironsides assistant Det. Ed Brown, Don Galloway, who sees a connection in the two death that leads him to suspect one of the surviving six US Army Rangers is trying to knock off his fellow comrades on order to get his hands on the missing two million dollars. Also for some strange reason now all of the ex-US Army Rangers for some strange reason now live in the San Francisco metropolitan area.
The key to all this is the US Army dog-tags that the six men had that somehow, if connected, shows the secret Swiss bank account serial number where the money was stashed in after the war was over. Ironside trying to get wherever information he can from the late George Billingham's Italian war bride Andra, Antoinett Bower, soon realizes that it was the late Kim Soo's dog-tag number that can connect all the dots or numbers of secret Swiss bank account. And whoever got his hands on Kim Soo's US Army dog-tags is now going to murder the remaining ex-US Army Rangers not only to shut them up but keep them from getting their share of the stolen loot!
It's Ironside's pretty assistant SFPD women detective Eve Whitefield, Barbara Anderson, who unknowingly uncovered what started all this by interviewing Kim Soo's son Leon, Bruce Lee, who runs a karate school in the Chinatown section of San Francisco. Office Whitefield found out from Leon that his personal safe at the karate school was broken into and the only thing missing was his late father's US Army dog-tag! It was that missing dog-tag that prevented the other ex-US Army Rangers from getting the Swiss bank account number! And it's that person who's now planning to murder them in order to keep the entire two million dollars all for himself!
***SPOILERS*** A bit confusing in all the numbers flying around the place but Ironside pieces all the facts together in exposing who the murderer really is. That's before the remaining US Army Ranger currency crooks Johnny Corman, Jack Kelly, and Andy Sheldon, Gene Nelson, end up doing his work for him. That by murdering each other and leaving him with all the loot!