Tensions are high at Chloe's house due to Meredith's frustration with Chloe's secrecy's. Aware that her mother is suffering, Chloe has to decide whether to tell her the big secret or not.
I'm In Here — Sia
This song is heard, most notably, at the end when Chloe and Brian are talking and Alek is looking in. It is also heard at different times throughout the episode.