A Twisted Ladder (Devils of the Briar") <1>

Psychologist Madeleine LeBlanc has spent her whole career trying to determine the cause of her father's schizophrenia. When her brother, Marc, takes his own life, she embarks on a shocking journey into her family's history fraught with dark secrets, conjured demons and a powerful relative who puts Madeleine's own life and property in peril.