Tuck Milligan

An estranged son and a former patient become the prime suspects in the case of a murdered doctor and the assault of his wife.

A dead scientist and a life form are discovered on the floor of an active volcano. Mulder and Scully investigate the devastating effects of this strange parasitic spore.

Dr Greene is accompanied by Cynthia on a trip to San Diego to visit his hospitalised mother, and help his father deal with the situation.

The Machine points Reese and Finch towards a lawyer, who specialises in helping some of society's poorest people, who needs some protection herself.

After learning that an untouchable crime boss may have been behind her former partner's death, Bell enlists the task force to take him down; Stabler is recruited for a secret mission of his own.

The detectives investigate the murder of a female medical student.