Dantès bounds up the stairs and into his father's apartment.
He's in the middle of telling him all the news – how the captain died, how he's going to be the new captain and make lots more money, how life's going to be a lot more comfortable from now on – when he notices that his dad is looking worn out.
Dantès looks around, realizing only then that the apartment is bare – there's not even anything to eat or drink.
Turns out dear old Dad used most of his 200 franc allowance from Edmond to pay back a debt to Caderousse, their neighbor; he's spent the last three months living on next to nothing.
Dantès is heartbroken – he hates to see his father suffer, and he's in the middle of explaining this to his dad when who should appear but Caderousse.
Caderousse and Dantès exchange some less than pleasant pleasantries; Caderousse is particularly excited when he sees some coins (a portion of Dantès' pay) dumped out on the table.
Dantès reveals that Morrel has invited him to dinner. His father is disappointed to hear that Edmond has turned down the offer, but he understands better when he mentions a certain Mercédès. He sends his son off to see her.
Before he can go, however, Caderousse warns Dantès that a girl like Mercédès will attract many followers; Dantès doesn't really pay attention to this.
Outside the apartment, Caderousse meets up with Danglars and tells him what he's learned upstairs; he also tells him that he's seen Mercédès hanging around with one particularly big Catalan dude.
Danglars thinks about this for a bit – no doubt rubbing his hands together and grinning menacingly – before suggesting that he and Caderousse go hang out at a tavern down by Mercédès' place, you know, to see how the big reunion goes.