(Dover,NH) - Kat McDonough faces more tough questioning from defense attorneys today as the Seth Mazzaglia murder trial continues in Strafford County Superior Court in Dover.

Kat McDonough (PD Photo)

McDonoughs credibility has been questioned as the star witness against Mazzaglia in the strangulation death of Elizabeth Marriott in October of 2012. Yesterday would have been Marriotts 21st birthday.