For writers and screenwriters of crime and mystery stories, cellphones pose some problems but also some solutions.

Two of the three novels I’ve written have been set pre-cellphones, in 1984 and 1948. I really enjoyed writing scenes for THAT OCTOBER and GHOST SHOW in which the characters have to urgently contact or find each other and can’t communicate via cellphone like my characters in SEVEN ANGELS – set in 2019 – can. It’s a great exercise in how your characters can problem solve.

Cellphones are so handy to modern-day stories that they can pose a problem writers must work around: They’re so handy that you have to find a way to circumvent them, like no cell service or a broken phone or a lost phone. Kind of like how the writers of the Superman comics, radio show, TV show and movies had to find a way around Superman’s godlike powers. The dude is hugely powerful, so you introduce Kryptonite or block him from the rays of the yellow sun, two things James Gunn used in his excellent 2025 film.

But one way that cellphones change everything is surveillance in thrillers, cop stories or spy stories.

No long would a gunsel like Elisha Cook Jr. in “The Maltese Falcon” have to sit in a public place, pretending to read a newspaper, looking so suspicious that Humphrey Bogart clocks him.

These days, a shady type can simply sit or stand and look at their phone, or pretend to. Think about it: How many times a day do you see someone looking at their phone and assume they’re scrolling social media or watching Korean pop music and never think they’re surveilling someone? Surveilling you?