On the way to a crime scene in Greenwich Village, Castle decides to stop into the closest coffee shop so he, like most mornings, can buy his and Becketts coffees. Whilst waiting at the counter for the coffees, he sees someone he recognizes siting on a seat near him, talking to a group of people, so he decides to call the persons name... Who is it? How does he know them?

When Chandler is involved in a murder he runs into an old friend Friends/Castle Crossover.I'm a crossover virgin so please be gentle lol