In the US: Wednesdays, 9/8c, The CW
In the UK: Acquired by Netflix. New episodes on Thursdays
Time travel takes many forms in TV and movies. Often, as we've seen with the likes of Doctor Who and more recently Timeless, it's about physically going into the past, maybe to kill Hitler, maybe because it sounds like a laugh. This form of time travel has its pros (eg getting to see how things really were first-hand) as well as its cons (eg exposure to virulent plague, crime, war, etc).
Then there are the stories that are all about the personal, with people going back in time within their own lifetimes, usually to sort out their own issues or those of their friends, family or perhaps even complete strangers (eg Quantum Leap, Being Erica, Hindsight). These have pros (eg excellent knowledge of the historical events, chance to improve one's own life) and cons (eg chance to ruin your own future happy marriage, alienate friends, never have your kids).
Perhaps the most genteel, distant yet also somehow the most intimate are the shows that don't involve travel at all, but are about temporal communication - being able to send messages back into the past to change the future. The surprisingly lovely yet plothole-tastic 2006 movie The Lake House is one such example, with Sandra Bullock and Keanu Reeves able to send each other letters through time and fall in love - and maybe prevent a terrible tragedy from happening.
Similarly, 2000's Frequency, which starred Dennis Quaid and Jim Caviezel, saw son and dead father able to communicate to each other across the space of 20 years through a ham radio. Unfortunately, their communication causes history to change and they somehow then have to prevent the new tragedy.
The CW's new adaptation of Frequency changes quite a bit of the movie yet stays essentially true to it. The CW favourite Peyton List (The Tomorrow People, Big Shots, The Flash) gender-swaps Caviezel's role to become Raimy Sullivan, a 28-year-old cop who is herself the daughter of cop and The CW favourite Riley Smith (Drive, Nashville, The Messengers), who was killed not long after her eighth birthday.
Angry all her life at the man subsequently revealed to be dirty and who abandoned her and her mother, she's somewhat surprised when her boyfriend (Daniel Bonjour) digs her father's ham radio out of the garage and although it doesn't work for him, it works for her, putting her in touch with her dead father just a couple of days before his death. Is she going mad or is it all true? And can she save her actually innocent father without causing even worst things to happen to her own history as a result?
Here's a trailer that gives away everything that happens in the first episode, so we can talk spoilery stuff after the jump.