Complex sentence: In 1997 Dean was interviewed for the "Tomorrow People" documentary "Beyond Tomorrow", which remained unreleased until October 2005, when it released on a DVD separate from the actual "Tomorrow People" series by Fantom Films.
Split into simpler sentences: In 1997 Dean was interviewed for the "Tomorrow People" documentary "Beyond Tomorrow", which remained unreleased until October 2005. It was then released on a DVD separate from the actual "Tomorrow People" series by Fantom Films.