The Avengers

#	Episode	Produced	London	Midlands	Sydney	Melbourne	New York
	The 'Chess Board' Introduction (specially filmed for the US market to explain the characters to the audience)
1	The Town of No Return	30-Jul-65	28-Sep-65	2-Oct-65	12-Apr-66	5-Apr-66	1-Sep-66
2	The Gravediggers	14-Apr-65	7-Oct-65	9-Oct-65	15-Mar-66	8-Mar-66	4-Aug-66
3	The Cybernauts	14-Mar-65	14-Oct-65	16-Oct-65	22-Mar-66	15-Mar-66	28-Mar-66
4	Death at Bargain Prices	17-Feb-65	21-Oct-65	23-Oct-65	26-Apr-66	19-Apr-66	11-Apr-66
5	Castle D'eath	20-Aug-65	28-Oct-65	30-Oct-65	17-May-66	24-May-66	2-May-66
6	The Masterminds	8-Jan-65	4-Nov-65	6-Nov-65	19-Apr-66	12-Apr-66	11-Jul-66
7	The Murder Market	4-Dec-64	12-Nov-65	13-Nov-65	1-Mar-66	1-Mar-66	30-May-66
8	A Surfeit of H2O	11-May-65	19-Nov-65	20-Nov-65	5-Apr-66	29-Mar-66	---
9	The Hour that Never Was	20-Jul-65	26-Nov-65	27-Nov-65	24-May-66	17-May-66	25-Apr-66
10	Dial a Deadly Number	22-Jan-65	3-Dec-65	4-Dec-65	8-Mar-66	26-Apr-66	24-Jul-66
11	Man-eater of Surrey Green	11-Jun-65	10-Dec-65	11-Dec-65	10-May-66	3-May-66	25-Aug-66
12	Two's a Crowd	28-May-65	17-Dec-65	18-Dec-65	3-May-66	10-May-66	9-May-66
13	Too Many Christmas Trees	1-Mar-65	23-Dec-65	25-Dec-65	25-Dec-66	25-Dec-66	11-Aug-66
14	Silent Dust	2-Jul-65	31-Dec-65	1-Jan-66	19-Jul-66	29-Jul-66	---
15	Room without a View	29-Apr-65	7-Jan-66	8-Jan-66	29-Mar-66	22-Mar-66	27-Jun-66
16	Small Game for Big Hunters	1-Oct-65	14-Jan-66	15-Jan-66	31-May-66	7-Jun-66	4-May-66
17	The Girl from Auntie	23-Oct-65	21-Jan-66	22-Jan-66	14-Jun-66	21-Jun-66	6-Jun-66
18	The Thirteenth Hole	22-Sep-65	28-Jan-66	29-Jan-66	7-Jun-66	31-May-66	18-Aug-66
19	Quick-Quick Slow Death	12-Nov-65	4-Feb-66	5-Feb-66	21-Jun-66	14-Jun-66	---
20	The Danger Makers	10-Dec-65	11-Feb-66	12-Feb-66	28-Jun-66	15-Jul-66	4-Jul-66
21	A Touch of Brimstone	24-Dec-65	18-Feb-66	19-Feb-66	5-Jul-66	28-Jun-66	---
22	What the Butler Saw	7-Jan-66	25-Feb-66	26-Feb-66	12-Jul-66	5-Jul-66	28-Jul-66
23	The House that Jack Built	18-Jan-66	4-Mar-66	5-Mar-66	2-Aug-66	22-Jul-66	16-May-66
24	A Sense of History	31-Jan-66	11-Mar-66	12-Mar-66	26-Jul-66	5-Aug-66	20-Jun-66
25	How to Succeed .... at Murder	15-Feb-66	18-Mar-66	19-Mar-66	16-Aug-66	12-Aug-66	13-Jun-66
26	Honey for the Prince	4-Mar-66	25-Mar-66	26-Mar-66	9-Aug-66	19-Aug-66	---
	The Strange Case of the Missing Corpse (three-minute promo announcing that Season 5 would be in colour)

The cast and crew lists are as complete as possible, and readers should note that they are often more informative than the originally broadcast credits; that is, I have included complete character names, if known, in place of a single name - the addition in italics - (e.g. "Captain Gifford" instead of "Gifford"); and uncredited characters (with speaking parts or notable appearances) are listed also. Some of these have been identified by a combination of research and good luck - and sometimes error, such as the infamous multiple John Bennetts; if you see a mistake let us know.

Australia made Too Many Christmas Trees a Christmas special, screening on 25 December 1966, several months after the rest of the season went to air.