Try to know everything about her (S01E12)

Floor B1 seems like a typical home, but when Rachel discovers a bloodstained path leading to a living room, she becomes overwhelmed with fear. In a state of panic, she urges Zack to end her life before collapsing. Danny then enters, locking Zack out and challenging him with the cryptic words, "If you uncover the whole truth, I'll let you in." Determined, Zack embarks on a solo quest across the floor to reveal the hidden realities surrounding Rachel.