Pemeran Tell Me What You Saw

Jang Hyuk (장혁)

as Oh Hyun Jae

Pemeran Utama

Choi Soo Young (최수영)

as Cha Soo Young

Pemeran Utama

Jin Seo Yun

as Hwang Hwa Young

Pemeran Utama

Jang Hyun Sung

as Choi Hyung Pil [Chief / Senior superintendent]

Pemeran Pembantu

Ryu Seung Soo

as Yang Man Soo [Veteran detective at RIU]

Pemeran Pembantu

Shin Soo Ho

as Jang Tae Sung [Detective at RIU]

Pemeran Pembantu

Yoo Hee Je

as Lee Ji Min [Detective at RIU]

Pemeran Pembantu

Kim Dong Gyun

as Park Sun Ung [Mucheon Metropolitan Police]

Pemeran Pembantu

Lee Joong Yul

as [Hongwoon Police Station Chief]

Pemeran Pembantu

Choi Jae Sub

as [Medical examiner]

Pemeran Pembantu

Choi Hyung Joo

as Kim Yo Han

Pemeran Pembantu

Shin Hyun Jong

as Kim Sung Jin [Police commissioner] (Ep. 1)

Bintang Tamu

Kwon Oh Jin

as [Sheep hunter] (Ep. 1-2)

Bintang Tamu

Kim Su In

as Cha Soo Young [Young] (Ep. 1-2, 4, 11)

Bintang Tamu

Kim Heung Rae

as Gang Seung Hwan [Murder Culprit] (Ep. 1-3, 6)

Bintang Tamu

Song Young Gyu

as Na Jun Suk [Profiler] (Ep. 1-4)

Bintang Tamu

Kim Young Woong

as Chief Bang [Section chief] (Ep. 1, 6-7, 11)

Bintang Tamu

Kim Ba Da

as Shin Gyung Soo (Ep. 1-6, 12)

Bintang Tamu

Moon Sun Yong

as Kim Sang Gil [Young] (Ep. 1, 12)

Bintang Tamu

Lee Gyu Bok

as [Investigation Team 2 detective] (Ep. 2-4, 6)

Bintang Tamu

Seo Dong Gap

as [Investigation Team 2 Head] (Ep. 2-4, 6, 14-16)

Bintang Tamu

Ha Jung Min

as [Woman walking dog] (Ep. 3)

Bintang Tamu

Kim Seo Ha

as Jung Chan Goo [Veterinarian / Culprit] (Ep. 3-4)

Bintang Tamu

Lee Hyun Kyun

as Doctor Ahn (Ep. 3, 5)

Bintang Tamu

Park Ji Hoon

as Kim Myung Woo [Culprit] (Ep. 4)

Bintang Tamu

Kim Geon Ho

as [Live TV Show director] (Ep. 4)

Bintang Tamu

Jo Yeong Jin

as Jo Sang Gyung [Commissioner General] (Ep. 4)

Bintang Tamu

Jang Tae Min

as [Inn manager] (Ep. 5, 8)

Bintang Tamu

Kim Tae Yul

as Gil Hyun Soo [Mute kid] (Ep. 6-7)

Bintang Tamu

Jo Wan Ki

as Noh Sang Chul [Paedophile] (Ep. 6-8)

Bintang Tamu

Baek Ji Won

as Kim Na Hee [Lawyer] (Ep. 6-8)

Bintang Tamu

Ha Hoe Jung

as Park Jung Woo [Culprit] (Ep. 7)

Bintang Tamu

Baek In Kwon

as Kim Pan Geun [Gangster] (Ep. 8)

Bintang Tamu

Joo Jin Mo

as Ha Tae Sik [Gang leader] (Ep. 8-9)

Bintang Tamu

Yoon Jong Seok

as Joo Sa Gang [Witness] (Ep. 8-9, 15)

Bintang Tamu

Kim Han Jong

as Cho Bang Man (Ep. 8-11)

Bintang Tamu

Park Yong

as [Police director - 5 years ago] (Ep. 9)

Bintang Tamu

Park Boo Gun

as Choi Doo Man [Gang leader] (Ep. 9)

Bintang Tamu

Seo Eun Woo

as Lee Yoon Jung / Lee Yoo Mi (Ep .9-10)

Bintang Tamu

Shin Seung Hwan

as Uhm Soo Tak (Ep. 9, 11)

Bintang Tamu

Lee Ki Hyuk

as Won Se Yoon [Managing Partner of Wonseo Group] (Ep. 10)

Bintang Tamu

Choi Ji Yeon

as [Yooseong Hospital Nurse Receptionist] (Ep. 10)

Bintang Tamu

Park Ya Sung

as (Ep. 10)

Bintang Tamu

Kang Ae Sim

as Chim Sa Bong / Bong Yeon Ja [Financial broker] (Ep. 11-12)

Bintang Tamu

Yoon Sang Hwa

as Kim Sang Gil [Hit-and-run culprit] (Ep. 11-12)

Bintang Tamu

Heo Woong

as Lee Jong Soo (Ep. 11-13)

Bintang Tamu

Kyung Sung Hwan

as Kim Jung Hwan / "Dominic" (Ep. 12)

Bintang Tamu

Lee Kwang Se

as [Orphanage director] (Ep. 12)

Bintang Tamu

Jang Ji Hoo

as Kim Jung Hwan (Ep. 12-13)

Bintang Tamu

Oh Ja Hun

as Shin Gyung Soo [Child] (Ep. 12-13)

Bintang Tamu

Kim Jung Jin

as Shim Soo Hyun [Detective] (Ep. 13)

Bintang Tamu

Yoo Yong

as [NFS control room] (Ep. 13)

Bintang Tamu

Oh Ki Hwan

as Seo Gi Suk (Ep. 14)

Bintang Tamu

Kim So Yang

as [Prisoner transport officer] (Ep. 15)

Bintang Tamu

Kim Mi Ra

as [Doctor] (Ep. 16)

Bintang Tamu

Kim Seon Gyeong

as [Panel woman]

Bintang Tamu

Kwak Na Yeon

as [Lawyer]

Bintang Tamu

Song Young Ah

as [Employee]

Bintang Tamu

Nam Hee Soo

as [NFS staff]

Bintang Tamu

Ahn Joong Kwon

as Reporter Jo

Bintang Tamu

Kim Wang Do

as [Criminal Investigation Team]

Bintang Tamu

Jeon Jeong Il

as [Villager]

Bintang Tamu

Hwang Yun Seon

as [Press conference reporter]

Bintang Tamu

Xooos

Bintang Tamu

Lee Chang Won

Bintang Tamu

Lee Seung Jin

Bintang Tamu

Lee Hye Jo

as [Nurse]

Bintang Tamu

Yu Yeon Su

as [Female victim]

Bintang Tamu

Gaemi

Composer

Lee Joon Hyeong

Sutradara

Ko Yeong Jae

Screenwriter