Fantastic Four #30
"The Two-In-One Terrors!"
Marvel's First Family are divided and at each other's throats! As the Earth-ending threat of the KING IN BLACK rages on, half of the Fantastic Four are Knullified and out to destroy their remaining friends and family! If that weren't enough...an ancient force has reemerged in the Multiverse. Who-or what-is THE RECKONING?!