"Pretty Little Liars" (PLL) Season 7 episode 5 debuts July 19, Tuesday. The upcoming segment is titled "Along Comes Mary" and it will see enemies of the Liars create problems for the girl gang. Here are the detailed spoilers for the next chapter of Freeform's series. Read on to find out what happens next.

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[Spoiler alert! This article contains spoilers for "Pretty Little Liars" (PLL) Season 7 episode 5 "Along Comes Mary." Do not read further if you don't wish to know more about it.]

Trouble is far from over for Liars. Things are only going to get complicated when some familiar faces return. The network has released a synopsis for "Pretty Little Liars" (PLL) Season 7 episode 5 on its official website. According to the press release, two of the Liars' enemies join hands to create problems for Spencer, Hanna, Aria and Emily.

One of them is Jenna, who shocks the Rosewood girls with her surprise return. As she seek revenge, she approaches another one of Liars' enemy to execute her plan. Meanwhile, girls wonder if Jenna is the "Uber A."

At the hospital, Alison has a new problem to deal with. She finds herself under the watch of Mary Drake and finds it hard to escape.

In the meantime, Caleb goes missing and the girls are unable to find him. Spencer approaches Hanna for help and they both search for him.

Elsewhere, Aria and Emily discover a lead. They come across a "secret apartment" they explore to find answers to their questions. Will they find what they are looking for?

Note: Promo video for "Pretty Little Liars" (PLL) Season 7 episode 5 is yet to be released. It is expected to be out after the television broadcast of episode 4 airing on July 12. Stay tuned, it will be made available here.

Meanwhile, fans can take a glimpse at the events of episode 07X05 via photos published on the network's official website.

"Pretty Little Liars" (PLL) Season 7 episode 5 airs July 19 at 8:00 pm on Freeform. More spoilers and updates are expected soon. 

UPDATE

A promo video for "Pretty Little Liars" episode 07X05 is released. Scroll down to watch what happens in "Along Comes Mary."