9 books in series

Salaisuus

Salaisuus is a 9-book series with 9 primary works first released in 1943 with contributions by Enid Blyton.

The Mystery of the Burnt Cottage
#1First

1943 • 3 Readers • 216 pages 4

The Mystery of the Invisible Thief
#7Popular

1950 • 5 Readers • 160 pages 4.3

The Mystery of the Pantomime Cat
#8

1949 • 5 Readers • 178 pages 3.7

The Mystery of the Vanished Prince
#9

1951 • 2 Readers • 180 pages 4

The Mystery of the Strange Messages
#11

1956 • 1 Reader • 180 pages 3

The Mystery of the Strange Bundle
#13

1943 • 2 Readers • 180 pages 3

The Mystery of Banshee Towers
#14

1961 • 4 Readers • 180 pages 3.5