Caecilius wants Grumio to do something for him...

Caecilius is cheating on Metella with Melissa, their ancilla. But what Caecilius doesn't know is that Melissa is cheating on Grumio, her husband, with him! The real secret is that Metella is cheating on Caecilius with Grumio. And, as always, Quintus knows all. Scandalous, much?