Note: 1st four seasons were in black & white, rarely seen in America, though now starting to come out on videoThe series was produced by ABC Britain and shown in the U.S. by the American Broadcasting Co., though the two ABC companies were not related1. Hot Snow
2. Brought to Book
3. Square Root of Evil
4. Nightmare
5. Crescent Moon
6. Girl on the Trapeze
7. Diamond Cut Diamond
8. The Radioactive Man
9. Ashes of Roses
10. Hunt the Man Down
11. Please Don't Feed the Animals
12. Dance with Death
13. One for the Mortuary
14. The Springers
15. The Frighteners
16. The Yellow Needle
17. Death on the Slipway
18. Double Danger
19. Toy Trap
20. The Tunnel of Fear
21. The Far Distant Dead
22. Kill the King
23. Dead of Winter
24. The Deadly Air
25. A Change of Bait
26. Dragonsfield
SEASON 2
27. Mr Teddy Bear
28. Propellant 23
29. The Decapod
30. Bullseye
31. Mission to Montreal (a case set in Canada)
32. The Removal Men
33. The Mauritius Penny
34. Death of a Great Dane
35. The Sell-Out
36. Death on the Rocks
37. Traitor in Zebra
38. The Big Thinker
39. Death Dispatch
40. Dead on Course
41. Intercrime
42. Immortal Clay
43. Box of Tricks
44. Warlock
45. The Golden Eggs
46. School for Traitors
47. The White Dwarf
48. The Man in the Mirror
49. Conspiracy of Silence
50. A Chorus of Frogs
51. Six Hands Across a Table
52. Killer Whale
SEASON 3
53. Brief for Murder
54. The Undertakers
55. Man with Two Shadows
56. The Nutshell
57. Death of a Batman (no, not Adam West)
58. November Five
59. The Gilded Cage
60. Second Sight
61. The Medicine Men
62. The Grandeur That Was Rome
63. The Golden Fleece
64. Don't Look Behind You
65. Death Ala Carte
66. Dressed to Kill
67. The White Elephant
68. The Little Wonders
69. The Wringer
70. Mandrake
71. The Secrets Broker
72. Trojan Horse
73. Build a Better Mousetrap
74. The Outside-In Man
75. The Charmers
76. Concerto
77. Esprit De Corps
78. Lobster Quadrille
SEASON 4
79. The Town of No Return
80. The Gravediggers
81. The Cybernauts
82. Death at Bargain Prices
83. Castle De'ath
84. The Master Minds
85. The Murder Market
86. A Surfeit of H2O
87. The Hour that Never Was
88. Dial a Deadly Number
89. Man-Eater of Surrey Green
90. Two's a Crowd
91. Too Many Christmas Trees
92. Silent Dust
93. Room Without a View
94. Small Game For Big Hunters
95. The Girl From Auntie
96. The Thirteenth Hole
97. Quick-Quick Slow Death
98. The Danger Makers
99. A Touch of Brimstone
100. What the Butler Saw
101. The House That Jack Built (a high-tech funhouse that's definitely no fun)
102. A Sense of History
103. How to Succeed... at Murder
104. Honey For the Prince
SEASON 5 - in color (or colour if you prefer)
105. From Venus With Love
106. The Fear Merchants
107. Escape in Time
108. The See-Through Man
109. The Bird Who Knew Too Much
110. The Winged Avenger
111. The Living Dead
112. The Hidden Tiger
113. The Correct Way to Kill
114. Never, Never Say Die
115. Epic
116. The Superlative Seven
117. A Funny Thing Happened on the Way to the Station
118. Something Nasty in the Nursery
119. The Joker (no, not Cesar Romero)
120. Who's Who???
SEASON 6
121. Return of the Cybernauts
122. Death's Door
123. The 50,000 Pound Breakfast
124. Dead Man's Treasure
125. You Have Just Been Murdered
126. The Positive Negative Man
127. Murdersville
128. Mission... Highly Improbable (no, not Peter Graves)
SEASON 7
129. The Forget-Me-Knot
130. Game
131. Super Secret Cypher Snatch
132. You'll Catch Your Death
133. Split!
134. Whoever Shot Poor George Oblique Stroke XR40
135. False Witness
136. All Done With Mirrors
137. Legacy of Death
138. Noon Doomsday
139. Look- (stop me if you've heard this one) But There Were These Two Fellers...
140. Have Guns- Will Haggle
141. They Keep Killing Steed
142. The Interrogators
143. The Rotters
144. Invasion of the Earthmen
145. Killer
146. The Morning After
147. The Curious Case of the Countless Clues
148. Wish You Were Here
149. Stay Tuned
150. Take Me To Your Leader
151. Fog
152. Homicide and Old Lace
153. Love All
154. Get-A-Way!
155. Thingumajig
156. Pandora
157. Requiem
158. Take-Over
159. Who Was That Man I Saw You With?
160. My Wildest Dream
161. Bizarre (last of original series, though Patrick Macnee did return for The New Avengers series years later)