1: King John's last to find out (5)
4: Alto I somehow kept in the dark, back during interactive broadcasting (4,5)
9: Hobo accepts employment at a home on the water (9)
10: Its a firm, small lettuce (3)
11: Regrets taking thousands in with leader of suspiciously questionable nature (9)
13: Theme eradicated partly by an eastern ruler (5)
14: Indolence evident in Rowes Lothario (5)
15: Page with scope for truism (9)
18: Some doctors oust head of Johnson and Johnson? (9)
19: Worry about Democrat's chief staff group (5)
20: Catch first fish? Hold fast (5)
22: Ran quickly along and scraped me badly (9)
24: Requires five kills, or a single accurate shot. (3)
25: Funny noises can rise from below (9)
27: End is close, doctor surreptitiously revealed (9)
28: German overwhelmed by naked touch (5)