Why Katherine Heigl's performance in âFirefly Laneâ turned me into a fan By Debashine Thangevelo Share Is Katherine Heigl finally free of the âGreyâs Anatomyâ curse? Could âFirefly Laneâ be the show that breaks it and ushers in a new era for the actor-turned-executive producer? If her performance as Tully Hart is anything to go by, it could very well be the case. Of course, âGreyâs Anatomyâ will always be one of Heiglâs biggest regrets. It was the show where her rising stardom was celebrated and acknowledged with an Emmy. And her big-screen career was on the rise with rom-comâs galore.