Help me connect these dots please!

so first some background, as some may know my players originally played Rouge Trader, but after royally screwing that up (they bombed malfi), then attempting to escape inquisitorial jurisdiction, they all were killed by the inquisition. Now for this new game i have them each controlling a small band of acolytes, and following different inquisitors are acting as a cleanup crew for the events that unfolded in the previous game.

now i thought it wold be awesome if my players would encounter and then either kill or resolve issues involving their old characters and the crew that followed them. here is a list of characters and the demise they experienced (to my players knowledge all these people are dead without a doubt)...

My players characters (mixture of dark heresy and rouge trader characters):
-Space marine initiate (male sister of battle): died when the players main ship was gutted by inquisitorial flames, had both a jump pack and helmet. wasn't specifically corrupt but i though he might become a pentient vigilante,

-Explorator, head tech priest: was never really there, acted in the shadows of events and had very little impact on events, died in ship gutting.

-Imperial psyker: Did very little that was 'evil' but was a questionable psyker who was investigating xeno tech a little to close for comfort, died in ship's burning as well, but was a pyromancer

-Duskworld assasin, body guard: very sneaky killy guy, did very little other than the assasination of evil things, but collected the skulls and ears of aliens, heretics and the like, was left marroned on a forbidden world (suprisingly by accident, didn't have a microbead)

-Main Ships captian and leader- Forge world missionary: maintained a close creedance with imperial rules, however she allowed tech heresy to continue aboard her ship and pardoned some preety big heretics and allowed them passage aboard her vessel. died in ships burning.

-ships original captain- nobel rouge trader: installed a tech heretic to guide his ship and act as navigator, went insane and set himself adrift in a small attack craft in search of his archnemisis, never heard from again (had no rations though).

-Voidborn assasin, security officer: personally bombed malfi, commanded the gun batteries, attacked the ships crew, persecuted 'heretics' and planned to kill everyone, died in ships fire.

- and the arch heretic the ex ship captian: once commanded a great space hulk, but allowed a heretek savant to build a giant sprawling monster of a maze inside his ship, then lured his fellow players into it with the intent of killing them, made 2 contacts with deamons, rebelled against the mechanicus, allowed a deamon to enter his body, killed hundreds if not thousands of imperial citizens, and then was pardoned and allowed on board the players vessel. after the party learned of his deamonic pact they killed him in a holocaust spell, with his deamon.

NPC's:

-Mira Inez, xeno smuggler, and merchant extrodinarre: not a member of the ship crew, but the arch nemisis of the original captain, intended as ally to players: not deceased

-Zolla winter, navigator, tech heretic: was installed in replacement of the ships machine spirit to navigate and controll ship, was initiating factor for the turn to heresy. taken away by mechanicus.

-Bones, planetary leison and gunsmuggler: a scum who convinced the captain to pay him as a trading class and conducted merchantile buisness aboard the ship, worked for the beast guild as well as other dark orginizations, saved the life of the arch heretic in exchange for 1 billion thrones, was killed by psyker and arch heretic to avoid paying fees, died from fire, and exploding ammo on person.

-Wraith: unsancitoned psyker found living in the underdecks of the arch heretics ship, contacted deamons, and also was killed by ship fire

-Lazerous Havelok, ship historian and archivist: acted as chief historian aboard the arch heretics vessel, stayed loyal to the emporer and was rescued by players, commited suicide when arch heretic was saved, also burned the histories he kept.

-Dr. Regis Maccabe: not sure who he really is, is a master of subterfuge with a unsafe addiction to human blood, works as fake doctor. steals the blood and other limbs of his patients. operated on the arch heretic to make him appear mutated so as to avoid recognition, died in ship fire.

-Lionus Zarkov master of ceremonies and standing armsman: loyal to the emporer, was taken form homeworld by the original captian to be saved from duty as imperial guardsmen, did very little and kept to himself, died in ship fire.

-Eli serghan, sanctinite medicae: was a sanctioned psyker who was placed in medical bay to train, did very little but healed many patients, was loyal to emporer, died in ship fire.

-Drustos Cortez, chief boson: in charge of the ships morale and order Drustos was used as a bodyguard for the captain, and often aided her in finding and killing heretics, he did however spend much time in battle against the forces of chaos, and also was always with the players. died in ship fire

-Lupus Constantine, chief cleric of the ordo malleus and all around badass (player appointed): Lupus constantine was the much loved and respected radical cleric aboard the vessel, obsessed with the hunting and killing of deamons, Constantine spent great lengths of time studying the dark items used to bring deamons about, also he was the one to first observe the deamonic entity inside the ex captian. during the revolutin he went aboard a deamon vessel, was kidnaped by the ex captain, was exposed to the void for a time, and died in ship fire.

-Lek Gendel, ogryn, bodyguard: with the intelligence of a child, this lumbering oaf was often seen acompanying the excaptain around the ship. He did not understand the idea of chaos and was convinced they were 4 emporers, he was confused in his religion, but was happy to still be able to kill things. he was best friends with bones, and was the one to find his body, he lamented his death for 2 days, then constantine became his new friend. died in ship fire.

-Zaktan: a crazed tech heretek, was allowed to enter the ex captain's ship and experiment, created numerous freaks of nature and then discovered an ancient iorn warriors ship in the space hulk, brought about catastrophic damage to the players, was killed by the captains witch lance after killing hundreds of crewmembers, but created a copy of himself inside the iorn warrriors ship, his body returned to the ship and then was desposed of, but his copy remains inside the ships deamonic entity. not deceased

-the Iornforge: a iorn warriors vessel lost to the warp, used Zaktan to create a body for itself, then began to wrek the ship, was brought down and killed by the ex captain, but the ship itself, then fled the area by detaching itself from the original ship and fleeing the area. not deceased

this is all the characters. as of now i have the players searching for a artifact that may have corrupted the original captain to initiate all this depravity..

any ideas on who/how i incorperate into this story??

thanks for any imput!