"The Secret of Dr. Kildare" shines as a multi-threaded gem, typical of the Kildare series. And this time the master may teach his pupil, but the pupil has a lesson of his own to give the great Dr. Gillespie. Three main twists populate this inviting plot, all of which come together in a heart warming conclusion, in true Dr. Kildare fashion. The first centers on the mysterious symptoms of a wealthy young female patient. The second involves the progression of the cantankerous Dr. Gillespie's illness. And the third focuses on the sudden, terminal diagnosis of Dr. Stephen Kildare. Our poor young doctor certainly has his hands full in this well paced and droll mystery. And while Dr. Kildare may be keeping lots of secrets in this one, he is certainly not the only one.
The interwoven plot lines keep the viewer entertained with anticipation and concern; however, Lionel Barrymore's outstanding performance as the cranky, brilliant, and always lovable Dr. Gillespie really steals the show. Lew Ayres offers a convincing and commendable job as the altruistic protege, while Laraine Day provides a lovely and supportive co-star, shining in a particularly touching bedside scene with Barrymore. But it cannot be said too often that this film gains so much from _all_ of the characters involved -- from Kildare's amiable parents, to the inexorable Head Nurse Byrd and the doctors' ever copacetic assistant, Conover. The conclusion ties the story lines together with typical charming optimism, but then if you aren't watching these films as part of the doctor's feel-good prescription, then you might be missing the point.