Callie and Erica have no idea that they were being set up for a blind date by Erica's best friend, both were surprised and didn't expect that their paths would cross again after 2 years and their journey then began

Sometimes it's just too hard to back out of a game when you've gone too far...and sometimes, the rules change. SSHG

“I have discovered the location of something else that might interest you," Lucius explained, "Merlin's staff. He and Pendry were rumored to used them interchangeably with no negative results. Perhaps his staff can be used as a replacement." HPSS Slash