Mariah and Jamie discuss:

 Jack Reacher Series by Lee Child

Spenser Series by Robert B. Parker

 Ellie Hatcher Series by Alafair Burke 

Sookie Stackhouse Series and Aurora Teagarden Series by Sookie Stackhouse

Never Let You Go by Chevy Stevens

 The Fever  by Megan Abbott

The Last Black Unicorn by Tiffany Haddish