$1K Reward Over Mystery Sheen on Potomac River | Patch PM

Stories to talk about this evening.

Environmental Group Offers $1,000 Reward If You Can Solve Mystery Sheen on Potomac

Potomac Riverkeeper Network announced Thursday that it is offering a $1,000 reward for information identifying those responsible for the plume of pollution in the Potomac River. The plume, first discovered over the weekend, has forced area water utilities to take measures to protect the drinking water of millions of area residents this week including those in Northern Virginia. >>> Read more.

Annual Wolf Trap Holiday Sing-A-Long Set for Saturday in Vienna

Wolf Trap kicks off the holiday season Saturday, hosting its annual Holiday Sing-A-Long. The free community event and Washington-area holiday tradition will feature “The President’s Own” United States Marine Band on stage with hundreds of local choristers, plus a community sing-a-long of holiday favorites. >>> Read more.

Patch Weekend Movie Guide: 'Jackie,' 'Rules Don't Apply,' 'Incarnate'

• Natalie Portman stars as Jackie O, and Warren Beatty makes his return to the big screen. Find out what to see and what to skip.

Sarah Jessica Parker's First Boutique Will Open at MGM National Harbor

• Boutique is set to open next Friday at MGM National Harbor, just across the river from Alexandria.

Metro's 2017 Plan is a Matchbox 20 Song

• WMATA General Manager Paul Wiedefeld unveiled a new plan called "Back2Good" Wednesday, and '90s rock fans everywhere immediately swooned.

Patch PM shares a few of the day’s must-read items from our Va. and D.C. networks. The Patch community platform covers communities across the area.