The actor crossed paths with Bertie Gilbert, who played Scorpius, the son of Felton's Draco Malfoy.
Tom Felton is having a Slytherin family reunion!
On Thursday, Felton posted a photo to his Instagram account of himself with actor Bertie Gilbert —who played his on-screen son in 2011's Harry Potter and the Deathly Hallows: Part 2— and revealed the two ran into each other during a London screening of In The Heights.
"When Draco sat next to Scorpius. Completely by chance!", the actor captioned the shot, which shows the pair seated at a table as Gilbert holds up his phone to display a throwback photo from set.
"Was such a lovely coincidence before sitting down to watch @intheheightsmovie ���� �� x", the 33-year-old continued.
While Felton portrayed Draco Malfoy in all eight installments of the Harry Potter series, Gilbert only made a brief appearance as Draco's son Scorpius in the epilogue of Deathly Hallows: Part 2.