A one-of-a-kind, hilarious, high-stakes murder mystery! Seventeen-year-old Jess is recovering from an emergency heart transplant only to realise she is being haunted by the disgruntled ghost of her donor, Tilly. Tilly is determined there is more to her death than meets the eye and insists that she won't stop haunting Jess until she helps solve her own murder. Their investigations take them via a Swiss bank, several five-star hotels, glitzy parties and some seriously high-end fashion boutiques ... But where do the clues lead, and will they solve the mystery of Tilly's death? More importantly, will Tilly rest and leave Jess alone if they do?