The People Next Door: 20th Anniversary Edition

When Amanda Harris purchases her new home, she has no idea she has moved next door to the neighbors from hell. Rhythmic pulses coming from the condo next door accompanied by missing pieces of time, and objects that disappear and reappear lead Amanda to fear she is losing her mind. When she gets a visit from an FBI agent who spontaneously combusts in her living room, Amanda is drawn into a nightmare scenario where the fate of the world hangs in the balance. Who are the people next door and what are they up to?