Cassandra Marie Sloan Shepherd or Cassie, she the younger half sister of Derek Shepherd and Mark Sloan. She's a third year resident at Seattle Grace, following in her older brothers footsteps to becoming a surgeon.
Cassandra Marie Sloan Shepherd or Cassie, she the younger half sister of Derek Shepherd and Mark Sloan. She's a third year resident at Seattle Grace, following in her older brothers footsteps to becoming a surgeon.
Sage Sloan is the younger sister of Mark Sloan. She grew up with the Shepherd family along with her brother until she enlisted in the Army. 9 years later and Sage moved to Seattle to become a surgica...