Getaway

1st of 5 chapter book meant for 7-10 year olds.
"The girls are pleasantly surprised when Jerry sends them on vacation to Hawaii. Unfortunately, when the girls arrive at their vacation destination they are immediately drawn into a mystery involving the disappearance of a volcano researcher on the island. Will the girls be able to stop the world from becoming one big lava pit, with very little time and without their usual supply of technologically superior gadgets?"