Complex sentence: In between the softcore films, D'Amato helped completing two horror films, "Killing Birds" and "Deep Blood" (1989), and produced other directors' films, which included Michele Soavi's "Stage Fright" and "Ghosthouse" by Umberto Lenzi.
Split into simpler sentences: In between the softcore films, D'Amato helped completing two horror films, "Killing Birds" and "Deep Blood" (1989), and produced other directors' films. These included Michele Soavi's "Stage Fright" and "Ghosthouse" by Umberto Lenzi.