Season 2

In the turmoil of 1984, when young heiress to the Grant oil fortune Catriona Grant is kidnapped at gunpoint with her young son, it’s assumed that the motivation is political. The huge investigation creates an uncontrollable press storm… but when the culprits unexpectedly fall silent, the case runs cold. Cat and Adam are never seen again.

Forty years later, when a man's body is discovered, Karen Pirie is assigned to reopen the case in complete secrecy. With the first key piece of evidence in decades, Karen must try to unlock one of Scotland's most infamous mysteries, whilst battling increasing media attention. What happened to Cat Grant and why do sinister forces want the secrets of her disappearance to remain hidden?