Missing One

"The loss of her mother has left Kali McKenzie with too many unanswered questions. But while clearing out Elena's art studio, she finds a drawer packed with postcards, each bearing an identical one-line message from a Canadian gallery owner called Susannah Gillespie: Thinking of you. Who is this woman and what does she know about Elena's hidden past? Desperate to find out, Kali travels with her to...