"Once in a Lifetime" is the 891st episode of Casualty and the 24th episode of the 28th series. It was preceded by "Blood is Thicker Than Water" and followed by "Valentine's Day Mascara".


A mountain-bike race between a man and his stepson ends in disaster when both riders lose control - and as the medics examine the boy, they discover old injuries that suggest he might be a victim of abuse. Dixie and Jeff try to extract a man who has got himself stuck in the mudflats by a river, and soon discover he has further problems. Jamie takes the plunge and decides to follow Ramin to Australia, but Robyn and Jeff try to persuade him to stay.