The Intruders, written by Michael Marshall Smith, is a gripping science fiction novel that delves into the unsettling world of alien abductions. The story follows a former detective who becomes obsessed with investigating a series of mysterious disappearances. As he uncovers evidence of extraterrestrial involvement, he finds himself drawn into a dangerous conspiracy that threatens his own sanity. This thought-provoking book explores themes of identity, memory, and the unknown.