Rani finds the pendant in the school bathroom and, upon learning its effects, leaves it in Sarah Jane's attic.
Paul pockets the pendant, and uses it to force Rani's father Haresh to do push ups indefinitely.
In Washington D.C., Alan hacks into UNIT's database to find a match of a drawing of the pendant Luke and Rani send to him.
Luke, Rani, Carla, and Sarah Jane (who Alan tracked down by hacking into hospital records) follow Clyde and Paul to the marina.
Clyde and Carla talk Paul through his memories, whilst Sarah Jane shows him a reflection of himself in the mirror, and he remembers who he is.