In the fallout from House of M and following the surprise film-noir hit Madrox, a new mutant team is forged! X-Factor is an investigative mutant agency that includes Madrox, the Multiple Man; Guido, the Strong Guy; Wolfsbane, the shape-shifter; Siryn, the chorus girl; Rictor, the living earthquake; and Generation X's Monet, the pompous witch. Drawn together in the heart of District X, this rag-tag band of heroes has a lot of answers to find, and fast! Collects X-Factor (2005) #1-6.

X-Factor investigations has been taking on stranger and stranger cases recently ... but when an eerie sighting leads the group to the hometown of their leader, Jamie Madrox the Multiple Man, they may have stumbled on a bigger mystery than they intended. Plus: it started with their new acquaintance, Sally, found brutally slain in her kitchen. And more recently, two rival gangs' lifeless bodies sprawled across a basketball court, a noose around each of their necks. Hot on the trail of a serial killer who's lynching his victims, the mutant detectives of X-Factor investigations are eager to cut his killing spree short. But here's hoping they find him before he finds them!

COLLECTING: X-FACTOR 224.1, 225-228

X-Factor has returned from Las Vegas and is ready for business as usual. And for the world's premier mutant detective agency, business as usual is anything but usual! A trio of lovely but lethal lasses has its sights on arguably the biggest target in New York City, with inarguably its biggest mouth: Mayor J. Jonah Jameson! To solve this caper, X-Factor will need every bit of luck it can get--so whose side is the Black Cat on? Meanwhile, Darwin hits the road for parts unknown and runs afoul of a mystical gunslinger, a case involving a vampire gets X-Factor a little bloody, and did Jamie really ask Layla to marry him? Plus: new developments in the love triangle/baby-daddy drama between Rictor, Shatterstar and sweet little Rahne Sinclair. If the secrets Shatterstar learned in Vegas come out, then who knows how Rahne will react!

COLLECTING: X-FACTOR (1986) #213-219.