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 ClanDesti ne? 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? COLLECTING: 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