Is there a sequel to The Collector by John Fowles?

Yes, there is a sequel to "The Collector" by John Fowles titled "The Magus." While "The Collector" focuses on the psychological aspects of obsession and captivity, "The Magus" explores themes of manipulation and reality through its protagonist's experiences on a Greek island. Although the stories are distinct, they share Fowles's intricate narrative style and complex character development.