The comedy co-stars Tony winner Christian Borle and Jonathan Ryland.
"Lifesaver," according to Deadline, "centers on the uptight, controlling and a bit neurotic Dr. Graham Permenter (Christian Borle) and loose cannon Leon (Jonathan Ryland), who become inextricably linked after Leon saves Graham’s life by giving him a kidney."
Harris has been cast as Borle's mother Liz Parmenter.
Harris won her Tony for her performance in Thoroughly Modern Millie.