The Judas Pair (S01E05)

After a man is murdered using a stunning pair of Regency duelling pistols, his wife and brother enlist Lovejoy's help to locate the weapons and seek justice for the crime. As Lovejoy delves deeper into the investigation, he inadvertently puts Jane in danger and finds himself challenged to a duel by Dr. La Grange. The quest for the pistols becomes a thrilling race against time to uncover the truth and confront the killer.