Who is Nicolas Claus

When a strange old man moves into the small town of S'Ville, Tanner, one of the town's police officers, is tasked with checking the man out. Her partner, Juliet, thinks Tanner is being too cynical. Tanner thinks she's being punked by her best friend, Cisco. But when Cisco agrees to be Tanner and Juliet's baby daddy and Juliet finds herself pregnant, everyone wonders if Nicolas really is Santa Claus and just gave Tanner and Juliet their Christmas miracle.