Animal Cops: Houston (8pm, Animal Planet) - The new season opens following eight officers from the Houston SPCA who look for animal abusers and illegal exotic animals.

Nova: Engineering Ground Zero (9pm, UNC-TV) - Nova documents the construction of One World Trade Center and the National September 11 Memorial and Museum. Included, 1 WTC architect David Childs, Port Authority of NY and NJ director Chris Ward, NYC mayor Michael Bloomberg, and others.

Saved: 9/11/2001 (9pm, Animal Planet) - Tonight's episode of "Saved," a show which chronicles the stories of humans bonding with animals to cope with loss and tragedy, has a 9/11-theme. Included: a dalmation adopted by the mother of fallen firefighters and a Yorkshire terrier that helped a little girl who was traumatized by 9/11.

American Greed: 9/11 Fraud (9pm, CNBC) - A look at 9/11-related scams, including a family friend-broker who stole almost $250,000 from a 9/11 widow and a man who falsely claimed a loved one died in the 9/11 attacks in order to collect money from the American Red Cross.

Rescue Me (10pm, FX) - In the series finale, the guys at 62 Truck struggle to pick up the pieces and move on following a major fire. Meanwhile, at the Fire Academy, a new batch of probies hear a familiar speech from a new leader. "Rescue Me," which stars Denis Leary (pictured), debuted in 2004 and followed the lives of a group of New York City firemen in the aftermath of 9/11. Here's a nice essay on the show's relationship with 9/11 and the wounded city of New York.

Paranormal Witness (10pm, Syfy) - In the debut of this new series exploring personal accounts of paranormal experiences, a 5-year-old girl in Baltimore befriends an invisible girl named Emily, a seemingly harmless playmate who becomes malevolent toward the girl's family.