A lady in disguise

After the mysterious death of her father Miss Gillian Young takes a new job as the principal costume designer at the renowned Theatre Royal Drury Lane. But while she remembers her father as a kind well-respected man of the police force clues she uncovers indicate he'd been living a double life: a haunting photograph of a young woman; train stubs for secret trips just before his death; and a receipt for a large sum of money. Are these items evidence of her father's guilty secrets? His longtime police partner thinks so.