Summary:

In 1868, a man named Eben Frost redeems a medal from a pawn shop and delivers it to a widow, Elizabeth Morton (Betty Field). Twenty years earlier her late husband W.T. Morton had used anesthesia on Frost for a dental procedure.

Flashback two decades, Morton (Joel McCrea) and his wife marry and he struggles in dentistry. Learning of Letheon (ether) from fellow dentist Horace Wells (Louis Jean Heydt), he successfully applies it in his practice for painless tooth extraction. Surgeons are interested but skeptical and want to know the composition. In keeping the simple formula a secret, Morton could become wealthy, but he is prompted to reveal its composition when confronted with a little girl bravely awaiting an operation.

Losing the prospect of gain from ether, he sets his financial hopes on his patented invention of a glass inhaler for administering it. Congress votes him a reward of $100,000, but his patent is infringed and rivals conspire to block justice and rewards. Morton dies young, poor, and unknown.

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