A study in patience as Minerva attempts to deal with her irksome colleagues (who have an unhealthy addiction to gambling on their students' love lives) and the pesky Marauders (who are determined to accomplish the increasingly achievable feat of filling an entire drawer in Filch's office), all while attempting to matchmake Sirius Black so he stops asking her out to Hogsmeade.

On its way from Platform 9 & 3/4 of King's Cross Station to the outskirts of the Village of Hogsmeade on a fateful September first, the Hogwarts Express serves as the scene of a horrific murder. Compelled by the need to protect her friend, Robin Wright combines forces with people she would much rather avoid, to solve the mystery behind the murder.