Teenage Mutant Ninja Turtles Ghostbusters TPB Volume 02

"An enemy from Master Splinter's past is back and hungry for revenge. To get it, he'll summon the most dangerous foe that the Turtles have ever encountered-the Collectors, shape-shifting demons that can pass through dimensions at will and cannot be stopped once they have been summoned to harvest a soul. To save themselves, the Turtles team up with the Ghostbusters, the only people who have ever faced them and lived to tell the tale, in a battle that turns into a chase across dimensions both incredible and terrifying."