X-Factor 2006 #21 - back issue - $3.00

In a castle of ice in a far off land, a fearsome being called the Isolationist sits and waits and plans...except he need wait no longer. He is coming to Mutant Town, and is seeking out Jamie Madrox. But whether he and X-Factor will be enemies or allies pales in comparison to the shocking developments involving Guido's new job offer, Rictor's unexpected call to action, Siryn and Monet's new case, and--most stunning of all--Layla's disturbing discovery of something even she didn't know. [per solicitation]

Beast travels to see the High Evolutionary.

• When We Last Left Our Heroes... - Recap of story-to-date and creator credits. Pinup is from cover to X-FACTOR #17.
• Previously in Endangered Species - Recap of ENDANGERED SPECIES story-to-date.
• Endangered Species Chapter 3 [of 17] - Continued from Uncanny X-Men #488; Continued in New X-Men #40