A new surgeon who joined the staff of Seattle Grace following the hospital's merger with Mercy West, April has had a checkered career. Firstly, Richard Webber fired her after she failed to check a burn victim's throat during a routine procedure, which ultimately contributed to the patient's death. Unwittingly sowing the seeds of his own dark and twisty fate, Derek Shepherd rehired her several weeks later after he was made Chief of Surgery, believing she was unfairly dismissed. April developed a little crush on Derek... and then almost got him killed when an angry gunman put Seattle Grace on lockdown. April also lost her best friend, Reed Adamson, in the shooting.