A large family from Independence, Ohio, runs a nonprofit organization Cornerstone of Hope, which provides grief services to anyone who has lost a family member. The family asks Pete to build a therapeutic space in the trees for Cornerstone of Hope, incorporating the nonprofit’s symbol, the butterfly. Pete jumps at this opportunity as he strongly believes in the unique healing power of trees and treehouses. He designs a butterfly-themed treehouse that stretches across six tree varieties, including a gorgeous cluster of maple, cherry, tulip and beech trees. The treehouse features a 400-square-foot deck, loft space, a butterfly wing-shaped jungle gym, a gigantic climbing net and a breathtaking butterfly chandelier. Pete really goes above and beyond when he outfits the treehouse with mechanical butterflies that can be enjoyed all year round!
As Alan risks killing Peter in a desperate effort to cure him, Walker teams with a mysterious young researcher to survive their quarantine. Jordan discovers her Rapid Response test is flawed.
A public demonstration of Grayson's technology has terrible consequences; Lucy joins the undead; Van Helsing's revenge against Mr. Browning and Lady Jane leads to a confrontation with Grayson; Mina discovers the secret of Grayson's love.
Nick and Hank investigate a cop killer who scalps his victims. Meanwhile, Juliette begins to communicate with Nick's mom via email and Adalind finds herself much closer to delivering her baby than she previously thought. Elsewhere, Monroe's parents decide to surprise him and Rosalee with an early arrival to Portland after learning some exciting news.
A shocking murder near an Amish farm fractures relations between the Kinaho tribe and the Amish, who are forced to rely on Proctor to fend off a vengeful mob. Investigating the crime on Kinaho turf, Lucas and his deputies find themselves confronted by uncooperative gang members and their imposing leader, Chayton Littlestone. Meanwhile, Carrie welcomes an unexpected visitor, while Lucas deals with the sudden appearance of a most unwelcome one.
Annoyed at waiting in really long lines at the return counter, Doofenshmirtz invents a "Back-to-the-Store-inator" to send things back to the store where they came. Meanwhile, Phineas and Ferb stage an extreme batting challenge their friends take place in, and Candace's obsession to bust coincides with her and Jeremy's visit to the Extreme Water Park.
Boyd's school considers a change after his research on its namesake causes outrage; Mandy relies on Blanca's expertise while working on a class project.
Stephen Fry and Alan Davies are joined by a selection of guests for a compilation of favourite moments from the K series of the quiz about 'quite interesting' facts.
When terrifying paranormal activity targets the children of a Rome, NY, family, Steve and Amy step in to investigate. As Steve discovers the property’s distressing connection to a bloody Revolutionary War ambush, Amy encounters a vicious entity that preys on living children.
Pip the Pirate Genie shares tales of his travels around the Never World.
Sean falls for Max's fencing instructor (Guy Pearce) who has a passion for justice and believes Sean does, too.
When the team discovers a renowned chess master in pig slop, Sweets goes under cover in the chess world; a science magazine honors Cam; Dr. Douglas Filmore fills in as lab intern.
A man breaks out in a rash; a professional fighter is injured in bed; and a man dressed as a vampire visits the ER with a concussion.
When Dixon breaks up with Olive for another girl, Chyna tries to cheer her up.
Martin is found dead in suspicious circumstances. Nuri becomes increasingly desperate to locate the missing drugs, with some tragic consequences. Nikki attempts to help a grieving William come to terms with his daughter Alice's death and his missing baby granddaughter.
After Avery blows her chance with Wes, she finds out he asks Lindsay on a date instead. Avery and Lindsay get in a big fight and decide to compete for Wes. Wes finds out about Avery's feelings and how she has a crush on him.
Todd's claim owner forces a change of plans; Grandpa makes a radical suggestion while visiting Parker; Dustin fights to reach mountain gold.
In trying to help Barney and Maxine's budding relationship, Burt and Virginia wind up getting in a fight. Meanwhile, Jimmy and Sabrina decide to start fencing in order to relieve some of the tension in their relationship.
Carrie, Mouse, Maggie, and Walt decide to go to their senior prom – at The Waldorf Astoria – together for a final hurrah. Larissa offers Carrie an opportunity that makes her rethink her plans for the next year. Mouse learns a secret about Donna LaDonna that could threaten her reign as queen bee. Meanwhile, Sebastian hides a big decision from Carrie.