Who owns the publishing rights to Ellery Queen?

The publishing rights to Ellery Queen, a fictional detective created by Frederic Dannay and Manfred Bennington Lee, have changed hands over the years. Currently, the rights are owned by the estate of Frederic Dannay, with various adaptations and reprints managed by different publishers. Additionally, the character has been featured in numerous adaptations, including television and film, which may involve separate rights. For the latest updates, it's advisable to check with publishers or literary estates directly.