A peculiar abduction in Boston leads the team to uncover details of the mysterious man known as the Observer; Walter, Peter and Astrid analyze unusual evidence and deal with Walter's insatiable appetite for milkshakes.
A couple with Down syndrome is expecting a child; social services has threatened to take the baby away unless they can prove they are capable parents; Abigail and Daniel agree to represent them and try to come up with a workable parenting plan.
Still reeling from the discovery of Frank's continued affair, Abby sets out to get justice for a debt-ridden widow whose husband may have faked his own death.
The lawyers represent a mail-order bride whose husband wants to annul the marriage and have her deported.
The lawyers are bewildered when a young couple begs them to reverse an adoption after learning about the baby's serious health issues; Abigail determines that the father is driving the decision, and convinces the mother to fight to keep the baby.