▁ 1 9 4 0 , ▁ 2 0 ▁episodes ) ▁ 1 8 ▁" The ▁Bro oks ▁Kid n apping " ▁( 2 / 1 9 ▁– ▁ 3 / 8 ▁ 1 9 4 0 , ▁ 1 5 ▁episodes ) ▁ 1 9 ▁" M ur der ▁in ▁Tur qu o ise ▁Pass " ▁( 3 / 1 1 ▁– ▁ 3 / 2 9 ▁ 1 9 4 0 , ▁ 1 5 ▁episodes ) ▁ ▁( N BC ▁Red ▁Network , ▁Th urs days , ▁ 3 0 - min ute ▁episodes ) ▁ 2 0 ▁" The ▁S nake ▁with ▁the ▁Diam ond ▁E yes " ▁( 4 / 4 ▁– ▁ 6 / 2 7 ▁ 1 9 4 0 , ▁ 1 3 ▁episodes ) ▁ ▁Second ▁Season ▁ ▁( N BC ▁Blue ▁Network , ▁Mond ays , ▁ 3 0 - min ute ▁episodes ) ▁ 2 1 ▁" The ▁Trop ics ▁Don ' t ▁Call ▁It ▁Mur der " ▁ ▁( 9 / 3 0 ▁– ▁ 1 2 / 3 0 ▁ 1 9 4 0 , ▁ 1 3 ▁episodes ) ▁ 2 2 ▁" The ▁Case ▁of ▁the ▁Trans pl anted ▁Castle " ▁( 1 / 6 ▁– ▁ 3 / 3 ▁ 1 9 4 1 , ▁ 9 ▁episodes ) ▁ 2 3 ▁" M ur der ▁on ▁February ▁Island " ▁( 3 / 1 0 ▁– ▁ 5 / 5 ▁ 1 9 4 1 , ▁