After surviving the Anti-Grendel Squad and a double vampire attack, Grendel Prime, Ptolemy, and Hari Smythe finally make it to the Grendel Grotto, the base of the Hounds of Orion. With Grendel Primeโs help, they may be able to finalize a special experiment thatโs taken years to developโan experiment that could change everything! โข A new Grendel story arc from visionary creator Matt Wagner! โข Four issue series.