Sam starts to reconsider his friendship with Naomi and Addison with Noah’s help try to save a pregnant woman with heart problems. Meanwhile, Pete’s relationship with Lisa gets complicated with Violet’s pregnancy.
Nathan and Haley both face their dreams as he questions his ambition to play in the NBA and she receives an offer from Nick Lachey. Meanwhile, Brooke learns something that could change Sam’s life forever, Jamie attends his first school dance, and Lucas and Peyton take a road trip.
There are dire consequences when Charlie messes up some calculations during a case and his brother is injured due to Charlie’s mistake.
The investigation into a professor’s death takes a dangerous turn when the team finds their lead suspect has ties to a radical animal rights group.
A man named Lucas Harvey is stalking Allison, convinced that he’s doing the work of God by getting rid of her and her ability. The Dubois family becomes confined to their house, under police supervision, after Harvey becomes a threat to the whole family.
When Ted violates the ‘three days rule’ by continually texting with a girl he’s just met, Barney and Marshall retaliate by impersonating her.
A deaf 14-year old wrestler suffers from hearing problems during a match, but his mother refuses to okay cochlear implants. Meanwhile, House’s insomnia proves a curse… and a blessing.