Midlife A loss of self-confidence and feeling of anxiety or disappointment that can occur in early middle Oxford Dictionaries Martina Spencer hits her fortieth birthday and retires from the homicide department at Las Vegas PD. Along with her adopted K-9, Backup, she hits the road not knowing or caring where she'll end up. Her adventures take her to Baton Rouge, Louisiana, where her life blossoms in ways she never imagined.