Audie Cornish

Every Thursday night you can find Nathan Fields making the rounds of Baltimore's red light district, known to locals as The Block.

An outreach worker with the Baltimore City Health Department, Fields, 55, is a welcome sight outside strip clubs like Circus, Club Harem and Jewel Box.

In the early evening before the clubs get busy, he talks with dancers, bouncers and anyone else passing by about preventing drug overdoses and how to stop the spread of HIV and other sexually transmitted diseases.

A suspected case of measles. A rabid fox on the loose. A recall of a dye used in tattoos. A drug epidemic that's claiming hundreds of lives.

Those are just a few of the problems that Dr. Leana Wen confronts in a typical week as the Baltimore City Health Commissioner. While they all have to be dealt with, it's clear that heroin is among Wen's gravest concerns. Right now, she's focused on stopping overdoses and saving lives.

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In today's crowded TV landscape, the casting director's job is no small thing. And that talent will be honored at the Emmy Awards next month. Jennifer Euston, who has been in the casting business for two decades, has been nominated this year for outstanding casting for a comedy series and for a drama series.

"I get the script, I read it, I break it down. Anyone who has a speaking part is my responsibility," she says. "Even if the person says, 'Hi' — one word."

On a hot, sunny Monday in mid-July, Dr. Leana Wen stood on a sidewalk in West Baltimore flanked by city leaders: Mayor Stephanie Rawlings-Blake, interim police commissioner Kevin Davis, Rep. Elijah Cummings. Under a huge billboard with the web address, she proudly unveiled a 10-point plan for tackling the city's heroin epidemic.

Wen, the city's health commissioner, said she aims to create a 24/7 treatment center, an emergency room of sorts for substance abuse and mental health. She spoke of targeting those most in need, starting with those in jail.