"Welcome back to Hogwarts," the teaser wrote, with a yellow background and wizard at the ready.
Harry Potter And The Cursed Child premiered in London's West End in July 2016 and proved to be a huge success.
The play's story picks up 19 years after the events of Harry Potter and The Deathly Hallows, and features Harry Potter as a senior figure at the Ministry of Magic while his son Albus Severus Potter is set to start at Hogwarts.
The youngster is even clutching a wand, and clearly sees Tom through the eyes of an idolised fan. The viral clip has since racked up over 54,000 likes on Twitter and has been retweeted over 36,000 times.
Felton is clearly a kind-hearted person, and avid fans in the comments section who were lucky enough to have met him can attest to his compassion.
If anyone knows how we can get a hug from the actor, please let us know via owl post. We want to hear more of his secrets…
The book's owner was an extra in the film, and was the first person to request his signature. Emma Watson and Rupert Grint also signed the book, which was auctioned by Teesside-based Vectis.
Vectis claim the book's owner asked the actor to sign the now-iconic novel as he sat in a marquee on set at Goathland on the first day of filming. The North Yorkshire village appears in the film as Hogsmeade.
He wrote on Verity Collins' novel: "To Verity, best wishes Daniel Radcliffe."
The actor who portrayed Hagrid in the franchise, Robbie Coltrane, also wrote his autograph on the novel while the film's director, Chris Columbus, wrote "Believe in magic".
The novel's owner, Verity Collins, was having chemotherapy to treat leukaemia. Collins' mother, Valerie Rudd, is selling the book on her behalf.
Rudd, who is selling the book on Verity's behalf, said: "She loved her time there. We would have even paid for her to be an extra. She was a big fan of the books.
“When Verity was 13 she was spending lots of time in the hospital and she’d read the books while she was there. I started reading the first one in the hospital with her."
Her mother continued explaining the story of Verity's part in the movie;
"So when we found out they were advertising for extras for the film we applied straight away, and even though she was having her treatment she was allowed to do it.
“She was about 15 at the time and he would have been about 11. She was with a group of extras, saw Daniel Radcliffe sitting by himself and felt sorry for him so she went and talked to him," Rudd continued.
The book, which has 13 signatures, was the first item Radcliffe had ever been asked to sign; "He said it was the first time anyone had asked him for an autograph."
Kathy Taylor, a representative from Vectis, said the book had smashed its "conservative" €500 estimate; "It's such a lovely story. It's always difficult to gauge the price when something is unique."
"The seller, who now lives in the south, has great memories of her time on the film and the way the cast treated her during a difficult time while she was ill but her mum said recently it had been sitting in a drawer," she added.
"It became apparent when we promoted the sale on social media it was likely to have been signed on the first day of filming on what was the first Harry Potter film, with actor Chris Rankin, who played Percy Weasley, confirming he had signed the book as well."
Many of us who grew up with the entire Harry Potter franchise remember waiting in those incredibly long queues for the latest book to be released, eagerly sprinted to the cinema for the flicks and desperately trying to dodge spoilers about character plots.
We also know that once it gets rebooted, we're officially OLD. Daniel Radcliffe will always be our Harry, Emma Watson our Hermione, and Rupert Grint our ginger nut Ron.
The actor who played the title role has now confirmed his thoughts that the hugely popular franchise will be rebooted, and we're totally in denial. Please don't do this to us.
Radcliffe spoke toIGNabout playing the boy wizard in the formative film series, sharing his affirmation that "some other version" of the movies will be created in the future.
"I’m sure there will be some other version of it. I know I’m not the last Harry Potter I’m gonna see in my lifetime – we’ve already got a few more in stage play Cursed Child."
The Fantastic Beasts franchise has kept the wizarding world alive (and is allegedly getting five films), as well as Pottermore and Harry Potter World. Radcliffe didn't rule out the possibility of a Harry Potter TV spin-off.
The actor recently revealed that the spin-off would be intriguing especially if it featured the Marauders- the name given to the group of friends featuring Harry's papa James Potter, Remus Lupin, Peter Pettigrew and Sirius Black.
The Marauders gang aren't alive before the final book or movie, the movie would presumably be a prequel. "I feel like there are other stories from that world that you could absolutely turn into a TV series, 100 percent," Daniel told TV Guide.
"A series with the older generation Marauders, that could be very cool." Amen, Daniel, Amen.
“To a certain extent with things like the play and Fantastic Beasts, I think people are still interested in talking to me about it, but nothing’s been happening in that area,” he told E! Newsin May of last year.
“At the moment, I’m very much enjoying playing lots of different stuff.” In an interview with The Hollywood Reporterhe wouldn’t mind reprising his role.
“I’m never going to close that door, but I think I’ll be happy enough and secure enough to let someone else play it,” he said at the time.
Radcliffe's latest role sees him take on the part of a low-level angel in Miracle Workers who must convince God to let humans survive.
'I loved being on set. I was good at being on set. I loved learning how to be helpful.'
'The greatest thing about being on set is you get to be part of a team.'
'That's the most special thing about it, and you get to feel like with everyone else you are making this thing together, and I loved that feeling straight away. I think that was definitely what made me a great fit for those films.'
We think he's being a little harsh on himself – we couldn't picture anyone lese in the role.