'Mary Mary' season 4 spoilers - Hail Mary and ongoing sister rivalry in episode 10

The previous episode of "Mary Mary" was a rollercoaster ride for Erica and Warryn. First there was Mitchell ruining the photo shoot, tries to get Goo Goo fired, and then confronts Erica and Warryn. Tina, on the other hand, is up for a few "cryptic moments" in this season 4 finale.

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According to a report from Enstarz, Tina may be slipping back into her old self. In past seasons, Tina Campbell was a destructive force that no one wanted to be associated with but she did appear to have turned a new leaf in the beginning of season 4. Something in the finale episode will tear that new facade down and Tina may be in to cause a lot of trouble.

The promotional trailer shows a lot of bickering between Tina and Erica regarding Tina's new song. Erica is supposed to be coming in to record background vocals but apparently she doesn't have the time to do so. That won't sit well for her sister.

Tina is shown asking her sister to come in even for just one day and record her part in the song. Erica denies her this and says that she has no open days to get the recording done. Tine reminds her of a previous event when it was Tina doing the background vocals for Erica. "[When] my life was falling apart...I still made it to the studio."

Erica still needed convincing and the trailer shows Tina visiting Erica at the studio, asking for just thirty minutes to get something done. When this doesn't work out, Tina takes the issue to Erica's husband Warryn. Fans should expect some back and forth debating and Tina even threatens to get her legal team involved if Erica won't come in for the song.

"I don't think I've ever felt so physically, mentally and emotionally drained," Tina states in the trailer.

"Mary Mary" season 4 episode 10, "Hail Mary," is scheduled to air on May 7 2015 on WeTV.