10 books • 3 series
Book #1: Arden's Cryptic Crosswords - 1
Book #2: Arden's Cryptic Crosswords - 2
Book #3: Arden's Cryptic Crosswords - 3
Book #4: Arden's Cryptic Crosswords - 4
Book #5: Arden's Cryptic Crosswords - 5
Book #1: Nautilus Crosswords Book 1
Book #2: Nautilus Crosswords Book 2