On the 17th of June 2010 Jan Crijns obtained his PhD degree (cum laude). His dissertation is entitled 'The Criminal Contract. The Legal Relationship with the Public Prosecutor in the Interface of Public and Private Law' (published by Kluwer, Deventer).
Jan Crijns publishes extensively on Dutch criminal procedural law. He is an editor for 'Tekst & Commentaar Strafrecht en Strafvordering' (Text and Commentary, Criminal Law and Criminal Procedural Law) and permanent author for 'Ars Aequi KwartaalSignaal' and 'European Human Rights Cases'. Jan Crijns is a substitute judge at the District Court of Haarlem and at the 's-Hertogenbosch Court of Appeals.