It is a cold winter day when Sherlock Holmes receives Inspector Gregory into his office in Baker Street. The inspector shudders a few seconds from the change in temperature, rubs his gloves, then finally takes off his coat and accepts an invitation to sit down. "A frosty morning, eh, Gregory? I think it takes a rather unusual murder to force you to come see me with this cold." "Your deduction is sadly apt, dear Holmes. They killed Dr. William Young this morning, at eight, as he opened the clinic where he worked." So begins "Murder Behind Closed Door," a single extra case expansion originally written by a fan in Italian, and later published by Asterion Press as an Asterion Gaming Days 2015 event promo for Sherlock Holmes Consulting Detective. Available for download on the Asmodee Italia website. Translated into English by BGG Forum members and freely available in the Files section.