Helios Jazz Orchestra: With Michael Lynche: The 18-piece orchestra is joined by former American Idol contestant and St. Petersburg native Michael Lynche singing jazz standards, Kansas City blues and selections from his debut album. It starts at 7 p.m. at NOVA 535 Art Lounge, 535 Dr. Martin Luther King Jr. St. N, St. Petersburg. $15. (727) 821-6682.
Ani DiFranco: The prolific feminist singer-songwriter is touring in support of her newest album ¿Which Side Are You On? See her at 7 p.m. at Ritz Ybor in Tampa. $25. (813) 247-2555.
Night Hike: Get a close look at some of the owls, bats, alligators and other creepy crawlies that come out after dusk on this hike starting at 7 p.m. at Boyd Hill Nature Preserve, 1101 Country Club Way S, St. Petersburg. $3, $1.50 children (reservations required). (727) 893-7326.
NCIS, 8 p.m., CBS: It's episode 200! Mark Harmon doesn't look an episode over 175.
Series premiere; Emily Owens, M.D., 9 p.m., CW: It's like Grey's Anatomy meets Ally McBeal. Did we write "like"? We meant "is."