The mystery of the dancing angels
Elspeth Campbell Murphy
The three cousins are stuck babysitting their bratty third-cousin Patience and when she disappears while they are visiting an old mansion, they must investigate.

by Elspeth Campbell Murphy (1997)
A special day camp lets three cousins get a look at what happens behind the scenes at the zoo, which helps them solve a mystery involving an escaping pet snake and a missing diamond ring.
Elspeth Campbell Murphy
The three cousins are stuck babysitting their bratty third-cousin Patience and when she disappears while they are visiting an old mansion, they must investigate.
Elspeth Campbell Murphy
Three cousins endeavor to find out who gave a painting entitled "Sabbath Day" to their grandfather for a birthday present.
Jerry B. Jenkins
Dallas O'Neill and his friends try to find out what is behind the strange behavior of the older sister of one of the members of the Baker Street Sports Club.
text by Robert Arthur
In searching for a lost parrot who recites Shakespeare with a stutter, Jupiter Jones' firm of young detectives becomes involved with a missing masterpiece.