R.S.V.P. murder; The twisted people; Come out, come out

George Malcolm-Smith is the author behind the mysteries "R.S.V.P. murder" and "The twisted people." His books, which also include "Come out, come out," offer readers a mix of suspense and psychological intrigue.

Biography from http://mysteriouspress.com/authors/hugh-pentecost/default.asp: >Hugh Pentecost >Aliases: Judson Philips >Hugh Pentecost was a penname of mystery author Judson Philips (1903-1989). Born in Massachusetts, Philips came of age as a writer during the golden age of pulp magazines, and spent the 1930s writing suspense fiction and sports stories for a number of famous pulps. His first book was Hold ‘Em Girls! The Intelligent Women’s Guide to Men and Football (1936), but...

An American author of mystery novels. She had one of the longest careers (from the 1920s to the 1980s) among major American mystery writers (Wikipedia).