Criminal Minds - Season 4 - ...

: Suffers from injuries following a car bombing in the season premiere, "Mayhem".

: This season introduced the George Foyet (The Reaper) arc in the episode "Omnivore," which would become one of the most significant and devastating rivalries for Aaron Hotchner. Personal Stakes : Criminal Minds - Season 4 ...

Criminal Minds Season 4 is widely regarded by fans on Reddit and Rotten Tomatoes as one of the show's strongest, most "brutal" eras. Spanning 26 episodes from September 2008 to May 2009, this season balanced high-octane action with deeply personal character development. Key Season 4 Storylines : Suffers from injuries following a car bombing

: Takes maternity leave to give birth to her son, Henry, and is briefly replaced by Jordan Todd. Spanning 26 episodes from September 2008 to May

: Drives a bomb-laden ambulance in a high-stakes standoff to save Garcia and the team. Notable Episodes S4E8 - “Masterpiece” - Unsubs: A Criminal Minds Podcast

Now we see JJ's replacement, Agent Todd, because she's on baby duty. Unsubs: A Criminal Minds Podcast Criminal Minds Season 4 Episode 8: Masterpiece - Tunefind

: Finally confronts his long-lost father in the two-part "Memoriam".