Crossover with The Sentinel.
Learning Curve --> BEST READ HERE
When Xander seems to be losing himself to depression after returning from Africa, Willow sends him on a mission that will get him away from the demon-fighting: to research the only known Sentinel. Time in Cascade gives Xander a whole new power and a new way of seeing himself so that when Spike shows up, everything changes. FINISHED
Experience Curve --> BEST READ HERE
Back in England, Xander feels like a whole new man, but not all the Scoobies are willing to accept the changes as good. When an old flame in danger and a demon interrupt the attempt to reconcile with the others, Xander wonders if they can put their relationship back together. ALMOST FINISHED
Warnings: Dom/sub and explicit slash
Pairings: Xander/Blair (Just the once), Xander/Spike (explicit), Jim/Blair (never described), Buffy/Riley (never described)