When family ties come irreversibly undone

**I Know You're Going to be Happy: A Story of Love and Betrayal**

**By Rupert Christiansen**

**Short Books, €16.35**

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The cover photograph of I Know You're Going To Be Happy appears to capture an intimate scene of family unity. Taken on a Sunday afternoon in 1959, it shows Michael Christiansen, the then Daily Mirror editor, sitting cross-legged on his living room floor opposite his wife, Kay. Between them, gently propped up by ...