For fans of He Stated/She Stated and Anatomy of the Scandal, Penny Hancock’s I Thought I Knew You is about secrets and is placed – and whose part you take when it certainly matters.

Who do you know better? Your oldest friend? Or your child?

And who in the event you believe when one accuses the other of an abhorrent crime?

Jules and Holly have been best friends since college or university. They tell each other everything, trading revelations and confessions, and sharing both big moments and the small details of their lives: Holly is the only person who knows about Jules’s affair; Jules was there for Holly when her spouse died. And their two kids – just 3 years apart – have become up together.

So when Jules’s girl Saffie makes a significant allegation against Holly’s child Saul, neither woman is prepared for the devastating influence this could have on their a friendly relationship or their own families.

Especially mainly because Holly, in spite of her principles, refuses to believe her son is guilty.