This got me thinking about the need for a satisfying ending and how, in many books, I have been more disappointed by a trite or glib happy ending than I ever have by books in which evil doers get away (at least in part) with their misdeeds.
Nevertheless, I do think resolution is critical in any kind of novel, and by that I mean that all the critical plot elements have been explained and resolved. I wonder though if I don't secretly yearn for justice at the end of a mystery or thriller. Would I be satisfied with a conclusion that allowed the crime to go totally unpunished? Would I feel let down if the protagonist failed to succeed in bringing the perpetrator to justice? To be honest I'm not sure.
What about you? What kind of resolution are you looking for in a crime novel? Do you need to see justice done?