Book 37

The Mystery at Death Valley

by Carole Marsh

Published 15 August 2010

Book 38


Book 39


Book 40

The Mystery at Devils Tower

by Carole Marsh

Published 15 August 2010

Book 41

The Mystery at Hollywood

by Carole Marsh

Published 1 April 2011
"It's showtime when Christina, Grant, Mimi, and Papa head for Hollywood, California and run into a mystery complete with Hollywood glamour, historic handprints, a 'waxy' museum, and ... what's that shaking ... is it an earthquake???"--Page 4 of cover.

Book 42

"Join Christina, Grant, Mimi, and Papa in the Twin Cities--Minneapolis and St. Paul, Minnesota--where they head for a dazzling Winter Carnival amidst quirky clues, icy adventures, flying snowballs, and one really sore spot for Grant! Owww! "P. [4] of cover.

Book 43

The Mystery at Motown

by Carole Marsh

Published 1 April 2011

Book 44


Book 45

The Awesome Atlanta Mystery

by Carole Marsh

Published 2 January 2012

Book 45


Book 46

The Baseball Mystery

by Carole Marsh

Published 2 January 2012

Book 46


Book 47

The Great Train Mystery

by Carole Marsh

Published 2 January 2012

Book 47


Book 48


Book 52


Mystery at Plymouth Rock

by Carole Marsh

Published 26 August 2016


The Mystery on the Bayou

by Carole Marsh

Published 15 January 2019