Signal (Original Television Soundtrack)

Crime Scene

New Clues

The Past Can be Changed

Mystery of Jae Han

Unstoppable Pain

The Longing Trace

Profiling

A Day In the Police Squad

Tracking

Do Not Give Up

The Desperate Signal

Series of Labyrinthine

The Real Criminal

The Daily Run

Unknown Alone

Long-Unsolved Case

The Truth Revealed

Chilly Breeze

The Plot

Suggestion

Irretrievable

Looking Back

The One Who Must Leave

Lonely Walk

Happy Person (Band Version)

The Petal

Blomming

Happy Person (Piano Version)

Looking Back (Original Television Soundtrack Version)

Long Lust Love

I Will Forget You

Finding the Trail

Lonely Detective

Continuation of Time

Investigation

Detective Lee Jae Han

For Those Left Behind

The Boy Park

Conclusive Evidence

Heart Felt Desire