Picture Romance Library 35 - The Masked Singer #1

A woman named Rose, who wears a long velvet cloak and mask as "the Masked Singer," performs at a drawing room while accompanied by a man named Anthony. When the restaurant manager struggles to find a replacement singer, Rose offers to help and performs publicly despite her emotional distress. During the performance, Rose becomes overcome and must stop singing, after which Anthony finds her and calls out her name as she appears to fade like a phantom, with a doctor present noting her weak pulse.