No time for Goodbye by Linwood Barclay

At the age of 14, following a fight with her father, Cynthia wakes up one morning to find her entire family gone - mother, father, and brother - with no note or any clue as to where they have gone. Now it's 25 years later and she is married with a daughter but is still unable to leave her past behind her and new clues are resurfacing. Seen through the eyes of her husband, Terry, we wonder with him if his wife is completely sane. Is she making up the clues? Has she known all along what happened to them? And if she is sane, then what happened to her family all those years ago. Some people might figure out part of the story - but not the whole thing! I went along for the ride - and enjoyed this book tremendously.