How × Why

1 Knockin' on Locked Door Main Theme
2 Criminal Eye
3 Full Picture of the Incident
4 Two Detectives
5 Perpetrator's Behavior
6 A Look of Trust 1
7 Impossible and Incomprehensible
8 Koldrum - 1
9 Koldrum - 2
10 Diametrically Opposite Combination
11 Consider
12 How × Why
13 Koldrum - 3
14 Koldrum - 4
15 Turbulent Air
16 Incident 6 Years Ago
17 Koldrum - 5
18 Koldrum - 6
19 At the Detective Agency
20 A Look of Trust 2
21 Koldrum - 7
22 Reasoning
23 Darkness of Mind
24 Time of Reasoning
25 Creak (Drama Instrumental)
26 Missing (Drama Instrumental)