A Place to Fall (слэш)

While being tasked to protect Charles Xavier, the annoyingly charming CEO of Xavier Pharmaceuticals, SHIELD agent Erik receives further orders to use Charles as a source of information to find and capture Professor X, the elusive leader of the renegade band of mutants called the X-Men. Of course, that's a rather difficult proposition, given that the man he's hunting is the same as the one he's trying to protect. And the fact that Erik's starting to find Charles more than a little attractive complicates everything.