Drake's immediate plans are disrupted when London authorizes him to pick up a doctor who is targeted by the opposition and bring him to London.  He begins to suspect that forces are already moving against him before he gets very far.

 Agents are disappearing.  Drake is assigned to be the next courier in order to find out how.  But he has three contacts along the way.  All three have impeccable records.  But which one is working for the other side?