"Zoë Sharp will keep you turning pages till dawn." —Jeffery Deaver   The cult calling itself Fourth Day is well funded and highly jealous of its privacy. Five years ago, Thomas Witney went in to try to get the evidence that the cult's charismatic leader was responsible for the death of Witney's son, Liam. Witney never came out.   Now, Charlie Fox and her partner, Sean Meyer, have been assigned to get Witney out, willing or not. But planning and executing a clean, surgical snatch is only the beginning. Five years is a long time to be on the inside, and the man who comes out has changed beyond all recognition.