The CSIs investigate the gruesome murder of Lady Heather's estranged daughter, Zoe, who was found in the middle of the Vegas desert.

Tonights guests include Senator John McCain and Heidi Klum.

Stephen Colbert welcomes the author of "The Assassins' Gate: America in Iraq", George Packer!

Guests: Jean Reno, Sanaa Lathan

When asked to present his branch's financials to the new CFO, David Wallace, Michael introduces his branch using this video.

The Dunder-Mifflin staffers join in kindergarten-like festivities for Valentine's Day while Michael heads to New York City for a conference with the corporate heads. After showing the documenters a tour of his favorite city, Michael accidentally lets slip to the others at the conference that he and Jan hooked up, and he finds himself in hot water when Jan and the new CFO of Dunder-Mifflin hear the story. Back in Scranton, Pam becomes irked when she discovers that Roy hasn't gotten her anything for Valentine's Day, Dwight struggles to find a gift for Angela, and Kelley talks off Jim's ear about her rather desperate affections for Ryan, who is less than interested.