⚠️ CW: murder, cannibalism, gun violence and animal death ⚠️ If you're looking for a mind boggling murder mystery with a techy sci-fi twist then you need to read this book. Part time constable Ella Manning never thought she'd have to investigate her ex-fiance's murder, but that's exactly what happens when tech entrepreneur Lincoln Shan is found dead in his study the morning after a controversial product launch. Trapped inside Lincoln's mansion above the remote town of Black Lake, it's up to Ella to catch the killer. But Black Lake is no ordinary place and its strange history will make this the most baffling murder case of her career, because some of the town's inhabitants have the power to rewind time and someone is using it to protect a murderer. And just as Ella is sure she has identified the culprit, the last six hours are undone. With no memory of what she discovered before, her investigation begins again with very different results. But which conclusion was true? The race is on to find the killer before they strike again, and time is not on her side. This book had me absolutely baffled until the very end but I was so hooked that I would have happily read it in one sitting. Just when you think you know what is going on something else happens and makes you question everything you thought you knew about all of the characters. This story has a few different timelines ranging from 1804 to the books present day in 2045 that all have their own stories but they equally help feed you small breadcrumbs of information that help you piece together the puzzle of this murder mystery and it is done so well. Overall, I really enjoyed this one and I highly recommend it.