Episode #		Original Air Date	Titles
Season 1
1.	1-1	14 Apr 73	Lady Killer
2.	1-2	21 Apr 73	Possession
3.	1-3	28 Apr 73	Someone at the Top of the Stairs
4.	1-4	05 May 73	An Echo of Theresa
5.	1-5	12 May 73	The Colour of Blood
6.	1-6	19 May 73	Murder in Mind
7.	1-7	26 May 73	A Place to Die
8.	1-8	02 Jun 73	File It Under Fear
9.	1-9	09 Jun 73	The Eyes Have It
10.	1-10	16 Jun 73	Spell of Evil
Season 2
11.	2-1	26 Jan 74	Only a Scream Away
12.	2-2	02 Feb 74	Once the Killing Starts
13.	2-3	09 Feb 74	Kiss Me and Die
14.	2-4	16 Feb 74	One Deadly Owner
15.	2-5	23 Feb 74	Ring Once for Death
16.	2-6	02 Mar 74	K Is for Killing
17.	2-7	09 Mar 74	Sign It Death
18.	2-8	16 Mar 74	Who Killed Lamb
Season 3
19.	3-1	01 Jun 74	A Coffin for the Bride
20.	3-2	08 Jun 74	I'm the Girl He Wants to Kill
21.	3-3	15 Jun 74	Death to Sister Mary
22.	3-4	22 Jun 74	In the Steps of a Dead Man
23.	3-5	29 Jun 74	Come Out, Come Out, Wherever You Are
24.	3-6	06 Jul 74	The Next Scream You Hear
Season 4
25.	4-1	04 Jan 75	Screamer
26.	4-2	11 Jan 75	Nurse Will Make It Better
27.	4-3	18 Jan 75	Night Is the Time for Killing
28.	4-4	25 Jan 75	Killer with Two Faces
29.	4-5	01 Feb 75	A Killer in Every Corner
30.	4-6	08 Feb 75	Where the Action Is
Season 5
31.	5-1	12 Apr 75	If It's a Man--Hang Up
32.	5-2	19 Apr 75	The Double Kill
33.	5-3	26 Apr 75	Won't Write Home, Mom--I'm Dead
34.	5-4	03 May 75	The Crazy Kill
35.	5-5	10 May 75	Good Salary--Prospects--Free Coffin
36.	5-6	17 May 75	The Next Voice You See
37.	5-7	24 May 75	Murder Motel
Season 6
38.	6-1	10 Apr 76	Sleepwalker
39.	6-2	17 Apr 76	The Next Victim
40.	6-3	24 Apr 76	Nightmare for a Nightingale
41.	6-4	01 May 76	Dial a Deadly Number
42.	6-5	08 May 76	Kill Two Birds
43.	6-6	15 May 76	A Midsummer Nightmare
44.	6-7	22 May 76	Death in Deep Water

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NOTES
An additional episode, made by an entirely different production company but shown in the series' regular timeslot and included on the DVD set is Who Killed Lamb?

Many of the episodes had their titles changed when shown in the U.S. as part of ABC's movie-length late-night Wide World of Mystery series:

# original UK title -> U.S. title
01 Lady Killer -> The Death Policy
04 An Echo of Theresa -> Anatomy of Terror
05 The Colour of Blood -> The Carnation Killer
13 Kiss Me and Die -> The Savage Curse
15 Ring Once for Death -> Death in Small Doses
16 K Is for Killing -> Color Him Dead
18 A Coffin for the Bride -> Kiss Kiss, Kill Kill
20 Death to Sister Mary -> Murder Is a One-Act Play
23 The Next Scream You Hear -> Not Guilty
25 Nurse Will Make It Better -> The Devil's Web
26 Night Is the Time for Killing -> Murder on the Midnight Express
29 Where the Action Is -> The Killing Game
32 Won't Write Home, Mom--I'm Dead -> Terror from Within
33 The Crazy Kill -> Fear Is Spreading
34 Good Salary--Prospects--Free Coffin -> Mirror of Deception
35 The Next Voice You See -> Look Back in Darkness
39 Nightmare for a Nightingale -> Melody of Hate
41 Kill Two Birds -> Cry Terror!
42 A Midsummer Nightmare -> Appointment with a Killer

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