whodunits is whodunit's Plural Form

whodunit

US [huˈdʌnɪt]
UK [ˌhuːˈdʌnɪt]
  • n.〈美俚〉侦探小说[戏剧,影片等]
Plural Form:whodunits  
n.
1.
〈美俚〉侦探小说[戏剧,影片等]
na.
1.
“whodunnit”的变体