Madness by Shantel Tessier is a dark romance novel, the sixth book in "The Lords" series, featuring a protagonist sent to a prison run by a Spade brother, Haidyn Reeves, where she must navigate a dangerous assignment as a therapist with a new identity, Charlotte Hewett, and choose between failing her mission or becoming his "toy". The story explores themes of revenge, power, and survival within the dark world of the Lords, focusing on the complex relationship between Charlotte and Haidyn