Jeanne Dante stars as precocious 13-year-old Judy Widdell, a devoted fan of dime-novel detective stories. When a real murder occurs in the vicinity, Judy insists upon playing sleuth, dragging teenaged astronomer Tom Fenton (Kenneth Howell) into her Sherlock shenanigans.
as Judy Widdell
as Tom Fenton
as Nancy Fairbrother
as Archibald Fenton
as Duffy
as Kasky
as Aunt Jessica
as Morris
as Gilroy
as The Tramp