Diamond Brothers is a 9-book series with 8 released primary works first released in 1986 with contributions by Anthony Horowitz.
#1 of 8 in Diamond Brothers
1986 • 12 Readers • 217 pages • 3.6
#2 of 8 in Diamond Brothers
1987 • 12 Readers • 208 pages • 3.5
#6 of 8 in Diamond Brothers
2001 • 7 Readers • 80 pages • 3.4
#7 of 8 in Diamond Brothers
2007 • 4 Readers • 125 pages