We're into the fifth episode of the season, so by now most viewers are aware that Leonard has essentially been in trouble since the first episode of the season, when he began being blackmailed for being gay and pictured with another man in a largely innocent but still compromising situation. This story line has been a part of every episode this season. It, then, should be no surprise to learn his peril continues. Leonard is a dear and I think most feeling human beings want this threat resolved. If it's any consolation, I believe I saw in a blurb about next season's shows that Leonard was in them, so while we don't know in what capacity, it appears he'll still be around. As for Grantchester, it's still decent viewing but not what it was a number of years ago.
In my pantry with my cupcakes...