Tina and Erica's solo singles are in direct competition, building tensions and sabotaging Warryn's desperate plan to bring Mary Mary back together. Then a miraculous Divine Intervention shocks the entire family!

The sister competition heats up as Erica and Tina release their singles on the same day-who is #1? Tina fears she's pregnant and is terrified to tell Teddy. Erica breaks down at NY show.

Erica and Tina are tricked into performing a Mary Mary show in Manchester, but a terrorist attack threatens everything. Tina and Teddy help a troubled celebrity couple after a cheating scandal.

Erica and Tina discover Warryn tricked them! The Marys travel to Africa, but when their plans derail, will they miss their show? Goo's keeping a shocking secret from her sisters.

Warryn fears for Erica's safety. Erica's vocal issues threaten a Mary Mary performance in Manchester. Warryn surprises Erica. Erica and Tina arrive in Israel and tensions ignite. Tina demands to cut the cameras!

Series Finale; Emotions run high when the family faces their past; Mary Mary sings 'Farewell' in the Holy Land and a revelation is made. Warryn struggles to reunite Tina and Erica before it's too late.