WHAT IT'S ABOUT As the series finale begins, vengeful killer Mark Kovac (Gerard Celasco) has bombed the Jefferson Institute labs with Temperance Brennan (Emily Deschanel), Seeley Booth (David Boreanaz), Angela Montenegro (Michaela Conlin) and Jack Hodgins (T.J. Thyne) still inside. Did they survive? Sorry: You'll have to watch "The Final Chapter: The End in the End," to find out.