凶手 (xiōng shǒu): murderer; assassin

After investigation, the police finally caught the murderer in this murder case.

In court, the murderer admitted his crime and apologized to the victim's family.

The police are doing their utmost to hunt down the fugitive murderer, hoping to bring him to justice as soon as possible.

The murderer in this case used extremely cruel methods, which aroused widespread public concern.

After years of effort, the police finally brought that murderer who had been at large to justice.

The murderer in the novel is an seemingly ordinary person, but hides great malice in his heart.