The once-notorious cabaret singer Adora Ferne guards a treasure trove of 12 classic Jaguar cars but hankers over the one that is missing. Enter Jack Colby: Adora's manager, Danny Carter, has commissioned him to buy the 13th dream car from its owner, the Earl of Storrington.
When a murder follows the Earl's rejection of an offer, Jack is determined to find out whether there is a link between that and the 12 Jaguars. But does the truth lie amongst the secrets of Adora's past or closer to home? Speeding along the route he's certain will lead to the answer, Jack rushes headlong into danger.