Moriarty the Patriot, Vol. 16

After going missing for three years, Moran is plotting to assassinate Lord Balmoral, a man who threatens the Franco-British alliance. But when Louis tries to convince Moran that murder isn't the answer, his devotion to William leads to a violent confrontation! Meanwhile, Albert has been imprisoned for the crimes of the Moriarty family and takes it upon himself each night to serve penance for an even greater crime—the one he committed against William as a child.

Volume 16 of the Moriarty the Patriot manga series by Ryosuke Takeuchi.