Signal: Choki Mikaiketsu Jiken Sosahan

Composer

• 
  Hayashi Yuki
• 
  Tachibana Asami

Director

• 
  Suzuki Kosuke
• 
  Uchikata Akira

Screenwriter

• 
  Ozaki Masaya

Main Role

• 
  Sakaguchi Kentaro

  Saegusa Kento

  Main Role
• 
  Kitamura Kazuki

  Oyama Takeshi

  Main Role
• 
  Kichise Michiko

  Sakurai Misaki

  Main Role
• 
  Watabe Atsuro

  Nakamoto Shinnosuke

  Main Role

Support Role

• 
  Kimura Yuichi

  Yamada Tsutomu [Detective / Misaki's subordinate]

  Support Role
• 
  Ikeda Tetsuhiro

  Kojima Shinya [Forensic officer]

  Support Role
• 
  Komoto Masahiro

  Iwata Kazuo [Chief of Investigation Division 1]

  Support Role
• 
  Aono Kaede

  Anzai Rika [Associate professor at Department of Forensic Medicine, Keimei University]

  Support Role
• 
  Kamio Fuju

  Kato Ryota [Kento's older brother]

  Support Role
• 
  Onishi Riku

  Saegusa Kento [Young]

  Support Role

Guest Role

• 
  Serizawa Tateto

  Maruoka [Reporter] (Ep. 1)

  Guest Role
• 
  Kawai Aoba

  Maekawa Honami [Former Tanihara Memorial Hospital nurse] (Ep. 1)

  Guest Role
• 
  Oe Yuuri

  Saegusa Kento [Child] (Ep. 1)

  Guest Role
• 
  Rimi

  Tashiro Ayaka [Victim] (Ep. 1-2)

  Guest Role
• 
  Kataoka Reiko

  Tashiro Kyoko [Ayaka's mother] (Ep. 1-2)

  Guest Role
• 
  Hasegawa Kyoko

  Yoshimoto Keiko [Former Tanihara Memorial Hospital nurse] (Ep. 1-2)

  Guest Role
• 
  Takeuchi Toshi

  Hashimoto Keisuke [Suspect] (Ep. 1-2)

  Guest Role
• 
  Yamazaki Gakudai

  [Police officer] (Ep. 1-2)

  Guest Role
• 
  Okayama Hajime

  Ito Yuji [Takeshi's senior detective] (Ep. 1-3)

  Guest Role
• 
  Takano Shiho

  Kato Miki [Kento and Ryota's mother] (Ep. 1, 8-10)

  Guest Role
• 
  Sakuma Yui

  Kitano Midori [Ramen Yasuda's employee] (Ep. 2-4)

  Guest Role
• 
  Yashiba Toshihiro

  Yasuda Jiro [Ramen Yasuda's owner] (Ep. 2-4)

  Guest Role
• 
  Matsunaga Yuriko

  Mika (Ep. 2, 4)

  Guest Role
• 
  Onoue Hiroyuki

  Tanaka Hitoshi [Shuichi's son] (Ep. 2-4)

  Guest Role
• 
  Ohnishi Takeshi

  Nakajima [Ryoko's husband] (Ep. 3)

  Guest Role
• 
  Sato Ryo

  Nakajima Reiko [Ryoko's daughter] (Ep. 3)

  Guest Role
• 
  Sasakawa Kanon

  Reiko [Childhood] (Ep. 3)

  Guest Role
• 
  Saburi Mayuna

  Shimada Yayoi [Victim] (Ep. 3-4)

  Guest Role
• 
  Moro Morooka

  Tanaka Shuichi [Josai bus driver] (Ep. 3-4)

  Guest Role
• 
  Manase Juri

  Yashiro Eiko [Former colleague of Tanaka / Josai bus clerk] (Ep. 3-4)

  Guest Role
• 
  Ohtaka Hiroo

  Kaneda Masaru [Shuichi's colleague] (Ep. 4)

  Guest Role
• 
  Kinoshita Ayane

  Yabe Kaori [Young] (Ep. 5-6)

  Guest Role
• 
  Nozaki Moeka

  Yabe Kaori [University researcher who was kidnapped by Masayuki] (Ep. 5-6)

  Guest Role
• 
  Yoshikawa Ai

  Kudo Kazumi [Masayuki's daughter] (Ep. 5-6)

  Guest Role
• 
  Aitsuki Akiko

  Yabe Kayo [Kaori's mother] (Ep. 5-6)

  Guest Role
• 
  Kosuda Yasuto

  Yabe Eisuke [Kaori's father] (Ep. 5-7)

  Guest Role
• 
  Takahashi Tsutomu

  Okamoto Norio [Former gangster] (Ep. 5, 7-8, 10)

  Guest Role
• 
  Aoki Ippei

  [Prison officer] (Ep. 5, 7)

  Guest Role
• 
  Hirata Mitsuru

  Kudo Masayuki [Former thief] (Ep. 5-7)

  Guest Role
• 
  Kitami Toshiyuki

  Oyama Yasushi [Takeshi's father] (Ep. 5, 9-10)

  Guest Role
• 
  Tsujikawa Keiji

  (Ep. 5)

  Guest Role
• 
  Shiraishi Shunya

  Shiraishi Tomohiro [Son of a victim of a series of thefts] (Ep. 6-7)

  Guest Role
• 
  Morioka Yutaka

  Miyagashi [Tomohiro's driver] (Ep. 6-7)

  Guest Role
• 
  Suzuta Shuya

  [Izakaya staff] (Ep. 7)

  Guest Role
• 
  Nishioka Tokuma

  Nozawa Yoshio [Member of the Lower House] (Ep. 7-8, 10)

  Guest Role
• 
  Kasahara Hideyuki

  Kuraki [Takeshi's junior detective] (Ep. 8)

  Guest Role
• 
  Nishihara Nobuhiro

  Moriya [Former Tojo High School student] (Ep. 8)

  Guest Role
• 
  Kaki Hiromi

  (Ep. 8)

  Guest Role
• 
  Kubota Yuki

  Sasaki [Shinnosuke's subordinate] (Ep. 8-9)

  Guest Role
• 
  Morishita Yoshiyuki

  Iguchi [Nana's father] (Ep. 8-9)

  Guest Role
• 
  Yamada Aina

  Iguchi Nana [Tojo High School student] (Ep. 8-10)

  Guest Role
• 
  Seto Toshiki

  Saito Yuya [Tojo High School student] (Ep. 8-10)

  Guest Role
• 
  Nagashima Seira

  Aoi [Kento's high school classmate] (Ep. 9)

  Guest Role
• 
  Emi Kurara

  Motomura Nana / Iguchi Nana [Adult] (Ep. 9)

  Guest Role
• 
  Hamada Mari

  ["Okanyaki Fujiyoshi" owner] (Ep. 9)

  Guest Role
• 
  Obara Yuito

  Ogawa Yoichi [Tojo High School student] (Ep. 9-10)

  Guest Role