Series 3 of Jonathan Creek keeps up the high standards of the first two series. The writing and plots are as ingenious as ever and Jonathan solves the mysteries with his usual diffident brilliance. There's lots of humor and Creek's boss is involved a little more, too, which is good.
The only downside is that Caroline Quentin doesn't seem to have the same gusto and enthusiasm as Maddie that she showed in the first two series. She was replaced for season 4 (by Julia Sawalha of Ab Fab), so perhaps she'd just found that she had no more to bring to the part. She's professional enough, but the outrageous chutzpah is missing.
Never mind, the show is still well worth watching. I'm not sure whether a new series is planned, but there have been several one-off specials, including one this past Christmas, and hopefully the BBC will release those in due course.