Season 4 - Episode Guide

Episode: 4x01 | Airdate: Jul 11, 1998

After Ros's disappearance, the team swing into action to discover what's happened to her. Beckett's need to find her brings him into conflict with Jan.

Episode: 4x02 | Airdate: Jul 18, 1998

Ros and Beckett are reunited and she reveals why she disappeared. General Russell has the team evicted from the bureau but they are soon needed to fight a deadly biological weapon.

Episode: 4x03 | Airdate: Jul 25, 1998

The team catch a 14 year old girl breaking into a highly secure government centre and Ros recognises herself at that age. There is also traitor in the centre and a priceless mask in peril.

Episode: 4x04 | Airdate: Aug 1, 1998

An international crime lord awaiting trial is desperate to stop two key witnesses testifying against him. Beckett's father, Matt tries to help him but is he on the level?

Episode: 4x05 | Airdate: Aug 8, 1998

As an out-of-control military satellite hurtles towards Earth, the team heads for a mid-ocean tracking station in a bid to avert a global tragedy.

Episode: 4x06 | Airdate: Aug 22, 1998

The team is alerted to a potential major incident when Colombian gangster Diaz enters the country and teams up with an English conman named Bleno.

Episode: 4x07 | Airdate: Aug 29, 1998

The team is alerted when Colombian gangster Diaz enters the country and teams up with an English conman named Blenco.

Episode: 4x08 | Airdate: Aug 14, 1999

The Bugs team come up against two highly intelligent brothers who are waging an extortion campaign.

Episode: 4x09 | Airdate: Aug 21, 1999

As Adam and Alex's wedding nears, the Bugs team are called to solve a blackmail case.

Episode: 4x10 | Airdate: Aug 28, 1999

With Ros fighting for her life in hospital, the rest of the team battles to stop a theft which would bring about the collapse of the banking system.