Sezon 4
Bölümler
1 A Killing Will Occur 17 Eyl 1970 
2 No Game for Amateurs 24 Eyl 1970 
3 The Happy Dreams of Hollow Men 1 Eki 1970 
4 The People Against Judge McIntire 8 Eki 1970 
5 Noel's Gonna Fly 15 Eki 1970 
6 The Lonely Way to Go 22 Eki 1970 
7 Check, Mate: and Murder (1) 29 Eki 1970 
8 Check, Mate: and Murder (2) 5 Kas 1970 
9 Too Many Victims 12 Kas 1970 
10 The Man on the Inside 19 Kas 1970 
11 Backfire 3 Ara 1970 
12 The Laying on of Hands 10 Ara 1970 
13 This Could Blow Your Mind 17 Ara 1970 
14 Blackout 31 Ara 1970 
15 The Quincunx 7 Oca 1971 
16 From Hrûska, with Love 21 Oca 1971 
17 The Target 28 Oca 1971 
18 A Killing at the Track 4 Şub 1971 
19 Escape 11 Şub 1971 
20 Love, Peace, Brotherhood, and Murder 18 Şub 1971 
21 The Riddle in Room Six 25 Şub 1971 
22 The Summer Soldier 4 Mar 1971 
23 Accident 11 Mar 1971 
24 Lesson in Terror 18 Mar 1971 
25 Grandmother's House 1 Nis 1971 
26 Walls Are Waiting 15 Nis 1971