CW | 9:00 pm

Mary (Adelaide Kane) doesn’t have a lot to lose — nor does this series, now in its final stretch — as she embarks on a quest for vengeance in the new episode "A Bride. A Box. A Body." She’s determined to exact justice from those who schemed against her. Elizabeth (Rachel Skarsten) also is shaken upon suffering a sudden disruption of the path she’s been on. Ben Geurens, Celina Sinden, Megan Follows, Craig Parker, Rose Williams and Spencer MacPherson also star.