Guided Ghost Tour @ City of Long Beach
151 W. Penn St., Long Beach. 516-431-2140. 6:30-9:30 p.m. $10-$15. www.longbeachny.org
This guided tour brings you to Long Beach’s scariest spots. After the tour, enjoy a massive carved pumpkin blaze at the haunted mansion.
Tricks, Treats, Tentacles & More @Atlantis Marine World
431 E. Main St., Riverhead. 631-208-9200. www.atlantismarineworld.com. 10 a.m.-5 p.m.
Halloween Party Featuring the Music of Soul Doctor @ Bordeaux Restaurant and Cabaret
324 Sunrise Hwy., Rockville Centre. 516-442-1530. $5. 8:30 p.m. www.bordeauxbarlounge.com
Win cash for the best costume and enjoy free shots at midnight.
Annual Halloween Parade @ Hampton Library
2478 Main St., Bridgehampton. 631-537-0015. www.hamptonlibrary.org. 10:45 a.m. Free.
Spooky Spirits in The Barn @ Rogers Mansion
17 Meeting House Ln., Southampton. 631-283-2494. www.southamptonhistoricalmuseum.org. 10:30 a.m.-12:30 p.m.
Howl-O-Ween @ Bideawee Dog Park
118 Old Country Rd., Westhampton. 631-325-0200. www.bideawee.org. 3-4:30 p.m.
Loaded Halloween Party Starring Necro @ Karma
620 Waverly Ave., Patchogue. 5 p.m. $18-$20. 631-807-6330. www.clubloaded.com
with Intrinzik, Pauly Harker, Snot Pot Crew, Dissconnect, Misery and Freelance Assassins
Literary Costume Party @ Canio’s Books
250 Main St., Sag Harbor. 631-725-4926. www.caniosbooks.com.
Rocky Horror Picture Show Spooktacular @ Cinema Arts Centre
423 Park Ave., Huntington. 631-423-7611. www.summercampcinema.com. 11:45 p.m. $15.
What started out as a bizarre cult musical has transformed into a midnight Halloween tradition still going strong 35 years later. But this isn’t your traditional Rocky—it’s a shadowcast, in which audience members get up on stage and perform along with the film. Come down, get your Rocky Horror fix and do the Time Warp in the aisles.
Scream Costume Party @ Karma
620 Waverly Ave., Patchogue. 631-807-6330. 10 p.m. Free with costume. www.linights.com
Kids Costume Contest @ Valley Stream Historical Society
143 Hendrickson Ave., Valley Stream. 516-561-2115. Free. 3 p.m. www.nassaulibrary.org
First Annual Halloween 5K Run/Walk for Craniosynostosis @ Nassau Community College
1 Education Dr., Garden City. 516-571-2919. $8-$25. Half-mile fun run at 8:45, 5K at 9:30 a.m. www.cappskids.com, www.jorgeposadafoundation.org
It’s no coincidence a Halloween 5K is raising money to fight positional plagiocephaly and craniosynostosis—the terrifying conditions cause flat spots on a child’s head and sutures inside it to fuse together, leading to stunted brain and skull growth. The Jorge Posada Foundation and Craniosynostosis And Positional Plagiocephaly Support (CAPPS) are banding together to combat the pair of conditions. All profits from the run/walk will go straight to the two groups, and each participant is automatically entered to win a handful of raffles.
The Machine Halloween: Pink Floyd Tribute @ NYCB Theatre at Westbury
960 Brush Hollow Rd., Westbury. 8 p.m. $49.50. 800-745-3000. www.livenation.com
The Franklin Square Horror @ The Alloco Residence
1148 Norbay St., Franklin Square. 516-352-4250. 7-11 p.m. Free. www.wix.com/joea65/franklin-square-horror
For 17 years, Joe Alloco has turned his Franklin Square home into a house of horrors for one night only. He has since become a local legend and thousands of Long Islanders flock to see him dressed as Leatherface in his haunted abode.