Gerald R. Weeks, Katherine Hertlein, and Nancy Gambescia (Marriage and Family Therapy) recently published the second edition of A Clinician's Guide to Systemic Sex Therapy (Routledge, 2015). This text is a companion book to Systemic Sex Therapy, second edition, which was publisher earlier in 2015 by Routledge. These two books continue the development of a new paradigm for the field of sex therapy. Weeks is the founder of the systemic approach to sex therapy. This text is his 23rd advanced professional book.