Danny (Donnie Wahlberg) is out for justice -- and more than a touch of vengeance -- when Baez (Marisa Ramirez) is hurt by assailants while helping to transport drugs to be destroyed in "Partners." A lieutenant with a sterling professional record unexpectedly causes problems for Frank (Tom Selleck). Kirk Acevedo reprises his earlier guest role as Baez's brother. Bridget Moynahan, Will Estes and Len Cariou also star.
Fresh Off the Boat
An episode called "Home Sweet Home School" finds Louis and Jessica (Randall Park, Constance Wu) clashing over how to run the restaurant and how to raise the kids. The boys all get straight A's in school, but that only convinces their dragon mom their classes are too easy. At work, she cracks the whip so harshly that Louis must find a way to get her to lighten up. Three other episodes of the show immediately follow.
Though CSI has a cyber unit that has fueled its own series, NCIS also is deeply involved in online crime in "The Lost Boys." A case that Gibbs (Mark Harmon) and his team are working goes international with the pursuit of terrorists who recruit new, very young allies via the Internet. The situation becomes potentially more lethal with the villains' purchase of black-market weapons. Guest star Matt Jones returns as Special Agent Ned Dorneget.
Joe (Jesse L. Martin) becomes the target of the so-called Weather Wizard (guest star Liam McIntyre), whose brother was killed by the cop, in "Out of Time." Barry (Grant Gustin) cautions Joe not to try to stop the villain on his own. Cisco (Carlos Valdes) develops suspicions about Dr. Wells (Tom Cavanagh), related to the identity of the Reverse Flash. A double date has uncomfortable results for Barry and Iris (Candice Patton).
Are You Smarter Than a 5th Grader?
A paleontologist knows a great deal about what happened on Planet Earth millennia ago, but what about classroom lessons learned during elementary school? A contestant who specializes in that branch of science, as well as a real estate agent, pit their knowledge of subjects ranging from art to geography and math against some real grade-school students in the new episode "Adolfo/Ashley."
America's Got Talent
The live semi-finals of the competition begin as 11 of the top acts perform on the stage of New York's Radio City Music Hall for judges Howie Mandel, Mel B., Heidi Klum and Howard Stern as they try to clear another hurdle toward that $1 million grand prize. Nick Cannon hosts the new episode "Semi-Finals 1."
Big Blue Live
Episode two of this new three-night miniseries event features an interview with a scientist who is trying to help solve the mysteries of shark migration and to study the anatomy of elephant seals and white sharks. The hour also dives into the hidden world of Monterey Bay's sea lions and sea otters.
Pursued as fugitives, Jackson (James Wolk) and the team fly to Zambia in search of leopard DNA that they hope will prove useful in manufacturing a cure for the aberrant behavior that's affecting animals around the world. Getting out of the country without detection may prove tricky, however, so they turn to animal rights activist Ray Endicott (guest star Warren Christie) for assistance. Chloe (Nora Arnezeder), meanwhile, makes the ultimate sacrifice to avoid further bloodshed in the new episode "Emotional Contagion."
Written by Diane Ruggiero-Wright, one of the show's executive producers, "Dead Rat, Live Rat, Brown Rat, White Rat" sounds like "I Know What You Did Last Summer" revisited. Several teens are responsible for an apparent death, but as they try to conceal the mishap, the supposed victim appears and attacks one of his "killers." Liv (Rose McIver) is taken back to her high school days as she and Clive (Malcolm Goodwin) investigate.
Kyra Sedgwick continues her guest role as the deputy chief in "The Mole." Before she finds out someone in the precinct is letting information leak, Holt (Andre Braugher) -- who doesn't see eye-to-eye with her anyway -- and Jake (Andy Samberg) try to put a stop to the situation. Terry and Rosa (Terry Crews, Stephanie Beatriz) try to advance the cause of their new drug task force. Melissa Fumero and Joe Lo Truglio also star.
In Their Own Words
Three new weekly episodes of this series, which profiles key historical figures by framing their life stories with their most memorable quotes, opens with "Queen Elizabeth II." The hour traces the indefatigable British monarch's life from her youth to her father's coronation as King George VI, followed by her sudden ascension to the throne and her 60-plus-year reign as queen.
Rizzoli & Isles
In the mid-season finale, a new episode called simply "5:26," after a vintage watch is found inside a balloon of cocaine inside the stomach of a dead woman, figuring out its significance becomes the key to protecting Jane (Angie Harmon) and all the people she loves. Sasha Alexander, Lorraine Bracco, Jordan Bridges and Bruce McGill also star.