X-Men - The Road To Onslaught v02 (2015)

Collects X-Men/Clandestine #1-2; Uncanny X-Men (1963) #327-328, Annual '95; X-Men (1991) #46-49; X-Men Unlimited (1993) #9; Sabretooth (1995) #1.
The buildup to the Marvel Universe's darkest hour continues as the X-Men face danger from without and within! What decades-old connection does Professor X have with the secretive ClanDestine? When Synraith returns, the two teams clash...but all is not what it seems! Can the X-Men solve the mystery before Synraith's victory is complete?