Complex sentence: Will briefly dated Francie Calfo (and then, unbeknownst to him, Francie's genetic doppelganger, Allison Doren) before he was nearly killed and then quickly shuttled into the Federal Witness Protection Program, removing him as a regular character for season three.
Split into simpler sentences: Will briefly dated Francie Calfo and shortly after, unbeknownst to him, Francie's genetic doppelganger, Allison Doren. Upon being nearly killed, he was quickly shuttled into the Federal Witness Protection Program, removing him as a regular character for season three.