"Richard Lazarus lived here". Avoiding death. Creating an energy field. Had all the life energy drained out. I am 76 years old and I am reborn! LAZARUS: It's Southwark Cathedral. Lazarus closes his eyes as his body "cracks" again. MARTHA: Change him into what? MARTHA: This is where he said to bring him. MARTHA: Will that kill him? THE DOCTOR: Probably from dormant genes in Lazarus's DNA. THE DOCTOR: Trying to set the capsule to reflect energy rather than receive it. THE DOCTOR: Used to be. THE DOCTOR: Using hypersonic sound waves to create a state of resonance. TISH: Cathedral. TISH: Professor. The Doctor, Martha and Tish race inside and the Doctor seals the lock with the sonic screwdriver. The church. Tired of the struggle. Up in the bell tower, Tish holds her head in agony as the sound waves from the organ resonate in the tight space.
Plan: A: 76-year-old Professor Richard Lazarus; Q: Who demonstrates his experiment where he uses hypersonic sound waves to restore his youth and cheat death? A: The experiment; Q: What mutates Professor Lazarus' DNA? A: dormant genes; Q: What does the experiment unlock in Lazarus' body? A: an evolutionary throwback; Q: What does the experiment turn Lazarus into? A: life energy; Q: What does Lazarus drain from his victims? A: The Doctor; Q: Who uses sound waves from the church organ to kill Lazarus? A: the energy; Q: What does the Doctor reflect from Lazarus's sonic micro-field manipulator? A: Southwark Cathedral; Q: Where did Lazarus flee to? A: the bell tower; Q: Where did Lazarus fall from? A: Martha; Q: Who does the Doctor invite to travel with him full-time? A: a passenger; Q: What was Martha's role in the Doctor's life before? Summary: 76-year-old Professor Richard Lazarus demonstrates his experiment where he uses hypersonic sound waves to restore his youth and cheat death. The experiment mutates his DNA, unlocking dormant genes in his body and turning him into an evolutionary throwback that drains life energy from his victims. The Doctor reflects the energy of Lazarus' sonic micro-field manipulator onto Lazarus, causing him to flee to Southwark Cathedral . The Doctor uses the acoustics of the cathedral to create sound waves from the church organ, which causes Lazarus to fall from the bell tower, finally killing him. The Doctor invites Martha to travel with him full-time rather than her just being a passenger.