Photo of the day

The New Yorker staff writer Lauren Collins and author and renowned serial-killer expert Stéphane Bourgoin pose for a portrait during the production of "Killer Lies: Chasing a True Crime Con Man," a documentary series about obsession and deception, following the unraveling of Stephane Bourgoin’s career as a best-selling author and serial killer expert. This is from Killer Lies.

Arthur Williams is pictured at Ouvrage Schoenenbourg in Eastern France. This is from Defending Europe.

A stack of undeclared currency was placed in an evidence bag on an inspection table after it was found in a suspect's belongings in El Paso, Texas. This is from To Catch a Smugler Season 7.

A young elephant (Elephantidae) walks close to its mother.

Tony Pollard in the library at Jasna Gora Monastery, Poland. In 1655 the monastery defended itself against an onslaught from the Swedish army. This is from Defending Europe.

Claude Marie poses is interviewed for "Killer Lies: Chasing a True Crime Con Man," a documentary series about obsession and deception, following the unraveling of Stephane Bourgoin’s career as a best-selling author and serial killer expert. This is from Killer Lies.

A reenactor firing a musket at Belfort Citadel, France. The iconic site played a vital role in the Franco-Prussian war. This is from Defending Europe.

Air Enforcement Agent Murray walks across a tarmac to a CBP air vehicle in San Diego, Calif. This is from To Catch a Smugler Season 7.