Good afternoon, it’s Monday! And here’s this week’s weather forecast if, like me, you walked outside this morning wearing a sweater and had to turn back because it’s actually warm today. Here’s what else you need to know. (PS: You can have this delivered to your inbox by subscribing here.)

1. Trump whistleblower could testify “very soon”

That’s according to House Intelligence Committee Chairman Adam Schiff, who said an agreement has been reached with the anonymous whistleblower whose complaint sparked an impeachment inquiry against President Donald Trump. [Washington Post]

Trump today said the White House was “trying to find out” the identity of the whistleblower. He also questioned whether Schiff should be arrested for treason. [New York Times]

And Republican Illinois Congressman Adam Kinzinger criticized Trump for tweeting a quote from a pastor who said Trump’s impeachment would cause a “Civil War-like fracture.” [WBEZ]

Meanwhile, Thomas Bossert, who served as Trump’s first homeland security adviser, said the president was repeatedly warned about a conspiracy theory pushed by Rudy Giuliani. That theory claims Ukraine, not Russia, was responsible for meddling in the 2016 election on behalf of the Democrats.

Bossert said the president was told the Ukraine theory was “completely debunked” before Trump spoke to Ukraine’s president in July. [New York Times]

And The New York Times is reporting that Trump pushed the leader of Australia to help U.S. Attorney General William Barr to gather information in hopes of discrediting the Mueller investigation. [New York Times]

2. Chicago will ditch library late fees

Mayor Lori Lightfoot announced today that the city will become the largest public library system in the country to stop charging late fees on overdue books.

Starting tomorrow, checked out items will automatically be renewed up to 15 times if no one has them on hold. If the book isn’t returned a week from the final due date, it will be marked “lost” and a replacement charge will be issued. But that fee will be waived if the item is returned.

The city will also pardon all overdue debts owed, a move that city officials say won’t affect the library system’s budget. Last year, the city collected $897,000 in late fees, which make up 0.7% of the Chicago Public Library’s budget. [Chicago Tribune]

3. The People’s Republic of China turns 70 tomorrow

The anniversary of the Chinese Communist Party’s rule comes as Beijing faces growing economic pressure and civil unrest. The Chinese economy is growing at its slowest pace in nearly 30 years, and the ongoing trade war with the U.S. isn’t helping. [NPR]

Domestically, Beijing’s authority faces a serious test in Hong Kong, where pro-democracy protesters have demanded less interference from China in the semiautonomous state. China has quietly responded to the protests by sending up to 12,000 troops to Hong Kong, diplomats say, sparking concerns over violent clashes with protesters. [Reuters]

4. Details emerge about Woodfield Mall suspect

A man charged with driving an SUV into Woodfield Mall made more than 100 online searches about the mall, according to Cook County prosecutors.

Javier Garcia faces a felony count of terrorism under state law, which allows the charge for acts that cause more than $100,000 in damage to buildings with multiple businesses.

Prosecutors said Garcia walked through the mall minutes before driving through it with an SUV earlier this month. No one was seriously injured from the incident, but Garcia barely missed a train attraction for young children, prosecutors said. A judge ordered Garcia to be held in jail without bail. [Chicago Tribune]

5. Well, I guess we’re doing a sports story today

Joe Maddon is out as the manager of the Chicago Cubs, where he helped guide the team to its first World Series championship in more than a century. But the Cubs missed the playoffs this year for the first time since 2014.

Now begins the guessing game of who will replace Maddon. Here’s a look at seven candidates who are considered “most likely” to step in. [Chicago Tribune]

Meanwhile, the San Diego Padres have already made calls about Maddon as the team searches for a new manager. [San Diego Union-Tribune]

And since we’re talking about baseball, here’s a look inside the “quirkiest craft in baseball” — how players break in a new glove. [New York Times]

Here’s what else is happening

• California’s governor signed a bill allowing college athletes to profit from endorsements and hire agents. [NPR]

• A WBEZ reporter traveled to the border with 10 Chicago-area activists who offered legal help to hundreds of migrants seeking asylum. [WBEZ]

• WBEZ’s new midday show, Reset with Jenn White, premieres Oct. 14. [WBEZ]

• Netflix released a teaser trailer for the fourth season of Stranger Things. [Twitter]

Oh, and one more thing …

Aadam Jacobs has amassed about 10,000 recordings of live concerts in Chicago over three decades. His collection includes the early work of Liz Phair, Smashing Pumpkins, Jeff Tweedy, New Order, Stereolab, The Flaming Lips, Yo La Tengo and much more.

WBEZ’s Curious City recently visited Jacobs to check out his collection and talk to him about his drive to record concerts. [WBEZ]

Tell me something good …

Tomorrow is the first day of October, and that means it’s time to start thinking about Halloween costumes. What are you thinking of dressing up as this year?

Me? I think Josh and I might dress up as Justin Timberlake and Britney Spears that one time they wore all denim.

What’s your Halloween costume this year? Feel free to email at therundown@wbez.org or tweet me at @whuntah.

Have a nice night! I’ll see you tomorrow. And if you like what you just read, you can subscribe to the newsletter here and have it delivered to your inbox.