Believe No One

Detective Chief Inspector Kate Simms is in the United States on sabbatical with St Louis PD. Simms is working with a 'method swap' team, reviewing cold cases, sharing expertise. She came to the US to escape fallout from her previous investigation working with forensic expert Professor Nick Fennimore. However Fennimore also happens to be in the States on a book tour and is engineering his trip to get down to St Louis - the last thing Simms wants . . .