Peace Story
An entire episode seen from the POV of Captain Peace.  Maybe begin with a confrontation with the Fortitude, but then go ’18 HOURS EARLIER’ and show Peace in action.  The idea would be to show Peace in his natural habitat.  A hero whose crew rightly worship him, even though he gets them into terrible scrapes.  We would also meet his superb bridge officers, on whose intelligence, professionalism and inventiveness under pressure Peace has come to rely.  They are also the people who eventually stop him, thus saving him and themselves (and indeed the Fortitude) from the destructive course that he had set.  Likely start would be the discovery, entirely accidentally, of the Fortitude’s warp trail.  They have no idea which way the ship was headed, and there’s no obvious destination in either direction, but they get lucky and pick the right way… 

Michael H Peace is a Kirk-like figure.  Always on the side of justice, always right and always successful.  He’s seen by Starfleet as a maverick, but he is a Starfleet man to the core and will defend it to his last breath.  In any other series, he would be the hero, but he becomes obsessed with the Fortitude and is Ahab-like in his resolve to bring her and her crew to justice.  Initially, he is content to follow regulations and bring the ship and her crew to Earth to face trial, if possible.  But he becomes more and more obsessed as time goes on and the Fortitude continually outwits and humiliates him, and eventually nothing will suffice except the total destruction of the Fortitude and the death of her Captain.