Sarah Hagan

Alex treats a patient whose religious beliefs place her life in jeopardy. Meredith wants to know more about Derek, and Izzie ponders contacting her estranged mother.

The wife of a Marine, who specialised in K-9 bomb detection, urges the NCIS team to investigate the recent death of her husband in Afghanistan.

Buffy invents an ingenious plan to destroy the First.

After their horrifying loss at the vineyard, the gang turn against Buffy and begin to follow Faith instead. Meanwhile, Spike and Andrew travel to an old church to question a priest about Caleb.

Wielding a mystical new weapon, Buffy rejoins the fray on the eve of the final confrontation with Caleb.

Faith and the Potentials discover an element of the First's plan and launch a pre-emptive strike, and Buffy brawls with Caleb.