Marshall and Lily worry that Lily will never fall pregnant. To allay their fears, the couple visit a specialist who bears an uncanny resemblance to Barney.
Lily and Marshall receive shocking news that has a profound impact on the gang; Ted begins his duties as best man for an old friend's wedding.
When a kidnapped officer escapes her captor, the team discover a strange connection to her missing husband; Abby knits gifts for the new members of NCIS.
Sheldon considers dropping out of college to focus on building his database; George Sr is frustrated when someone else gets credit for his football wins.
When Brennan is shot while working late at the Jeffersonian lab, she is rushed to the hospital in critical condition and struggles with visions of her mother that defy her usual logic.