Spanish network CANAL + will air a 42-minute long special on Half-Blood Prince Saturday, July 4. Host Cristina Teva will talk to stars Daniel Radcliffe, Rupert Grint, Emma Watson, Jessie Cave (Lavender Brown), Bonnie Wright (Ginny Weasley), Tom Felton (Draco Malfoy), Michael Gambon (Dumbledore) and director David Yates on the set of the sixth film.

The segment also promises looks at various sets for Half-Blood Prince, including Dumbledore's office, Slughorn's potions classroom, Diagon Alley, the Three Broomsticks, the Astronomy Tower, Borgin & Burkes and much more. As a teaser, a photo of the host with Dan in the Potions room can be seen here, thanks to Snitch Seeker.

Source: Potterish