The Clock Strikes Thirteen by Mildred A. Wirt Benson.

The Clock Strikes Thirteen by Mildred A. Wirt Benson.  Penny Parker is a teen-aged sleuth and amateur reporter who has an uncanny knack for uncovering and solving unusual, sometimes bizarre mysteries. The only daughter of widower Anthony Parker, publisher of the "Riverview Star," Penny has been raised to be self-sufficient, outspoken, innovative, and extraordinarily tenacious. Her cheerful, chatty manner belies a shrewd and keenly observant mind. Penny was the creation of Mildred A. Wirt, who was also the author of the original Nancy Drew series (under the pseudonym Carolyn Keene). Wirt became frustrated when she was pushed to "tone down" Nancy Drew and make her less independent and daring. With Penny Parker, Wirt had a freer hand and received full credit. Wirt once said, " 'I always thought Penny Parker was a better Nancy Drew than Nancy is." In "The Clock Strikes Thirteen," Penny is confronted by two mysteries that ultimately converge. First there is the odd extra chime from th