Having solved the case of the missing mascot, sister-brother duo Moxie and Milton form their own detective agency.

They get their first case when Moxie’s best friend Emily receives a nice letter signed with nothing but a mysterious purple squiggle. Who sent it and why? Tenacious Moxie investigates; thoughtful Milton puts together the clues. They’re the perfect team. If only they knew that.

Convinced their detective styles are too different, the siblings split up to form their own agencies. But as more students receive letters, Moxie and Milton realize they must work together to find out who is behind this purple squiggle. The answer will warm your heart.

Told in Moxie’s singular voice, Two's a Crowd delivers clever storytelling in an irresistible, richly illustrated package.