Mary Roberts Rinehart
A crime writer often called "the American Agatha Christie" (<a href=http://en.wikipedia.org/wiki/Mary_Roberts_Rinehart>Wikipedia</a>).
Works (50)

The Circular Staircase
1908

K
1915

Haunted lady
1942

The After House
1914

The Bat
1926

The Detective Story

The great mistake
1940

The Case of Jennie Brice
1978

The Door
1930

The Yellow Room
1945

The wall
1938

The Street of Seven Stars
1914

The Window At The White Cat
1910

The Man in Lower Ten
1909

The Red Lamp
1940

Miss Pinkerton
1960

Dangerous Days
1919

The album
1942

Long Live the King!
1917

The swimming pool
1952

A light in the window
1948

Episode of the Wandering Knife
1950

The Frightened Wife
1953

The Amazing Interlude
1918

When a Man Marries
1909

Alibi for Isabel
1944

This strange adventure

The Confession
1989

The state vs. Elinor Norton
1933

The Doctor

Mary Roberts Rinehart's mystery book
1947

Love Stories
1919

The Mary Roberts Rinehart crime book
1957

The Breaking Point
1922

My story
1931

Lost Ecstasy
1927

Tish
1916

Sight Unseen and the Confession
1921

The altar of freedom
1917

A Poor Wise Man
1920

Famous Plays of Crime and Detection

Affinities
1920

More Tish
1921

Tish Plays the Game
1926

Tenting To-night (A Chronicle of Sport and Adventure in Glacier Park and the Cascade Mountains)
1918

Bab : a sub-deb
1917

Married people
1937

Through Glacier Park
1916

Where There's A Will
1912

Two flights up
1928