"Be careful before answering your next call. It could be the beginning of your worst nightmare. After a tough week, Tanya Kaitlin is looking forward to a relaxing night in, but as she steps out of her shower, she hears her phone ring.  The video call request comes from her best friend, Karen Ward.  Tanya takes … Continue reading #AuthorInterview: Chris Carter, author of The Caller @simonschusterUK @JamieCriswell