George's future is put at risk as Tulkinghorn uses the evil moneylender Smallweed to pile on the pressure. Guppy makes a discovery about Esther which shocks Lady Dedlock to the core. Esther and Jarndyce take in Jo the crossing sweeper, who is seriously ill and on the run from Tulkinghorn's men. But their kindness produces an unexpected result.

George has to make an impossible decision when Tulkinghorn and Smallweed turn up the heat on his debts. Guppy's quest for information takes him back to Krook's shop, with explosive results. Jarndyce is beside himself when tragedy strikes Bleak House.

Richard is in dire straits but Ada and Esther may be too late to help him. An unexpected meeting with Woodcourt raises uncomfortable questions for Esther. Jo the crossing sweeper is critically ill, and despite Woodcourt's best attempts it is a matter of life and death. Tulkinghorn discovers Lady Dedlock's defiance with disastrous consequences.

Esther's feelings for Woodcourt grow stronger despite her best intentions. Inspector Bucket begins his murder investigation with no shortage of suspects. An early arrest appears to wrap the case up quickly, but a spate of poison pen letters suggests that all is not as it seems.

Richard and Ada's news causes great concern for Esther and Jarndyce. Inspector Bucket's investigation gathers steam when he tracks down the mysterious letter writer. As evidence mounts against Lady Dedlock, Bucket sets a trap for the killer - with astonishing results.

As Bucket wraps up his investigation, there's yet more trouble for Lady Dedlock in the shape of the evil moneylender Smallweed, who has evidence of her secret past and intends to use it. Cornered and desperate, Lady Dedlock makes a terrible decision.