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.
As a young girl Sarah always wanted to help people, so she took a career being a doctor. Being on the top of her class and getting a quick start with her career she became the most wanted Pediatric S...