The duo are sucked into the fast and furious world of Formula 1 after Bath's famous motorsport dynasty, the Addingtons, report that their up-and-coming driver has died during a sub-3.5-second pit stop. As an F1 fan herself, McDonald won't let patriarch and Team Coach Archie Addington run rings around her, but when a significant someone from her past gets dragged into the investigation, she's thrown off course. But it's one of Dodds' specialisms that leads them to uncover the darker side of success and finally unravel the truth.