Last spring I was rejected by two agents who requested partials of my mystery manuscript. Since then, I have revised the manuscript and then had it reviewed by my critique group. Is it appropriate to re-query these same agents, indicating I have revised the book and request to resubmit, or is this a bad idea?
Well, they aren't going to arrest you but you might find yourself being fired on by the cluegun.
There are a lot of agents who handle mystery. Give the rest a shot before you go back to people who've already said no.
When I say no to partials, if I want to see revisions, redrafts or retrofitted turbo charged syntax, I'll say so. Unless you heard something very close to "query me again if you revise", move along.