Exchange III by Regson



After an initial grid fill, solvers must exchange two characters – leaving real words. Guidance may be obtained from the single extra letter generated by the wordplay in several clues.
Across

1    Fabulous secret about husband (6)
5    Lion beheaded in a nanosecond – or a much longer time (5)
9    Present king holding Red Cross Bowl (4)
10    Exaggerated information at first about a fictional detective (7)
11    It can be used to close little boy in empty office (5)
13    One old North American burial place of kings (4)
14    Sign of old mediator (4)
16    Iron bar in a meadow (4)
18    An eastern star changed to another one (7)
20    Sink full of American greens (4)
22    Unite old master and playwright (4)
24    Kill donkey say – in the year one (7)
26    Supplement for the bard’s English child for example (4)
29    Author’s skirt foregoes Scottish wool (4)
31    Decrepit cows are mean without a good dose of elixir (4)
32    Dwarf fish caught in small net at last (5)
33    “Honey” is the beginning of many a song (7)
34    Function at church in Glasgow formerly (4)
35    Geordie could eat from this when he has time (5)
36    Birds tango with heartless opponents (6)
Down

1    Cocaine with this eye condition could yield a fungal disease (6)
2    Joy and Sam almost dancing a long way in New Delhi (7)
3    Portion of a march in Thailand city (4)
4    I see famous retired jewel thief (6, 2wds)
5    Approve merely headless mentally deficient person (5)
6    Poet once circulating old Indian money (4)
7    No Indian tree is a tropical evergreen (4)
8    When horses become sausage down under (5)
12    Short priest entertains surprisingly neat mythical creature (7)
15    Fine large kangaroo leaving duck in command (4)
17    Linen coins (4)
19    Swell try – but $100 lost to nurse (7)
21    Bob got shaping tool (6)
23    Exploits of old – to gather in immature birds (6)
24    Chief officer topping more Scots reptiles (5)
25    False appearance in German army (5)
27    A brief poem for bishops perhaps (4)
28    Cheese in Scotch broth reportedly (4)
30    Sally leaving Jack – you can ask her for advice (4)
To enter this competition, send your entry as an image or in list format,  to derekharrison@yahoo.com before the 8th February 2015. The first correct entry drawn from the hat will receive a book from the Chambers range which has been donated by Chambers.