“Shadowhunters” Season 2, episode 17 will see two of the three Mortal Instruments go missing.

In “A Dark Reflection,” Clary (Katherine McNamara) and Jace (Dominic Sherwood) will set out on a mission to find the missing Mortal Mirror before it could land on their enemy’s hands. But along the way, Clary realizes that her brother, Jonathan (Elias Toufexis), could be closer than she thought.

Read: Will Jace and Clary find love while on a mission in “Shadowhunters” Season 2?

Elsewhere in episode 17, Isabelle (Emiraude Toubia) will have a hard time accepting the fact that her brother, Max (Jack Fulton), is already growing up. Additionally, Maia (Alisha Wainwright) will struggle to open up to Simon (Alberto Rosende).

Earlier this month, showrunners Todd Slavkin and Darren Swimmer spoke with Freeform online to dish some details about the characters in the upcoming episodes. Despite Maia and Simon only getting to know each other recently, the showrunners acknowledged the fact that the two have chemistry. However, Slavkin and Swimmer did not directly say whether or not the two characters will eventually fall in love with each other.

In the previous episode, Maia kissed Jace, but she told him that the kiss didn’t mean anything to her. Jace also shared a kiss with Clary, but they are not a couple either.

In episode 16, titled “A Day of Atonement,” Jace and Clary will go on an unsanctioned mission where the latter will discover her other powers. The installment will also serve as Clary’s first time visiting the Brocelind Forest, and the first time that fans of the “Shadowhunters” books will see it on a screen.

Meanwhile, the co-showrunners previously talked about Alec (Matthew Daddario) and how he will evolve as a leader throughout the latter part of Season 2. “Alec’s leadership skills continue to grow and mature as the season evolves. Unfortunately, every leader must make difficult decisions, and Alec is no different. He always wants to do the right thing, but when your boyfriend is a Downworlder and you’re the head of the New York institute, the “the right thing” can be elusive,” they said.

“Shadowhunters” Season 2, episode 17 will air on Freeform on July 24 at 8 p.m. EDT.