"In Sleeper, David Kettlehake created an intense, immersive atmosphere that kept me turning the pages, even when the suspense became unbearable...(the book) explores various themes such as morality and justice. I was conflicted about Boon's character, particularly his social projects funded by illegal proceeds. Boon was not a clear-cut hero; while his actions were good, they were tainted by criminal behavior. This complexity amplifies the...