An abandoned car leads Sebastian and the ICC team to Poland where technology reveals a shocking secret. The investigation uncovers a bizarre scenario in which families are pitted against each other in a fight to the death. When Eva and Tommy go undercover, their lives are in peril, and it’s up to Hickman and Louis to reach them in time.

While in Florence, Eva finds something amiss when she discovers another similar kidnapping. While confronting her former partner in the Italian Police, a secret is discovered that may put Sebastian's career at risk. Back in Cannes, a search of the financial records from the missing boy's father shows that not everything is as it seems.