Complex sentence: Pete was imprisoned (on remand) for a lengthy period in December 2003 after being framed for arson by his then-wife Eileen but returned after being acquitted at his trial in June 2004.
Split into simpler sentences: Pete was imprisoned (on remand) for a lengthy period starting December 2003 after being framed for arson by his then-wife Eileen. He returned after being acquitted at his trial in June 2004.