Lucifer recap: 'The Last Heartbreak' 

serves us a highball glass full of flashbacks tonight as we drink in Pierce as a 1950s detective hunting a serial killer.

We open with a suspenders-clad Pierce and his partner Ray tracking a murderer who exclusively kills couples, then fade to the present, where a newspaper announces that the Broken Hearts Killer has just died in prison.

Pierce and Chloe chat about their Axara concert date while Lucifer and Ella look on. Ella’s still enraptured by their chemistry and announces, “They totally boned,” which sends Lucifer into a controlled tizzy. Ella assures him that their chemistry’s a flash in the pan, while Lucifer and Chloe are on another level.

Meanwhile, Pierce asks Chloe out again, this time to dinner, and honestly, he smiles more in this scene than he has all season, which goes a long way to delivering a fraction of the chemistry Ella keeps raving about. Then Dan, the human embodiment of bad timing, interrupts with the discovery of two bodies discovered at Griffith Park.

At the scene, Lucifer declares Chloe’s date with Pierce none of his business, although he did discuss it with both Ella and Dr. Linda. He says nobody will become between the two of them when Pierce

steps between them to examine the bodies in the convertible.

The victims, who are holding hands, were drugged unconscious and had their chests crushed, and Pierce correctly guesses that one was married and was forced to swallow his wedding ring, just like in the 1950s Broken Hearts Killer cases. Yep, we’ve got a copycat of Clark Hoffman, whom Pierce and Ray arrested back in the day for killing seven cheating couples.

Pierce wants to get involved in the case, but Luci declares, “There’s only room for one immortal in the detective’s life, and that position has been filled.” Pierce apologizes, but since Lucifer continues to insist that he and Chloe are only partners, he assumed asking Chloe out was fine. (Still seems sketchy to me, but say what you’ve gotta say to convince yourself, Cain.)

Then another murdered couple turns up, this time at a motel. As they roll out, Chloe tells Pierce they need him on the case, causing Lucifer to grumble, “And I normally

Couple two, featuring a cheating woman, were also drugged and crushed, leaving Chloe to wonder how the killer’s picking his victims. Pierce says that was a mystery with the original BHK, and “we” were lucky to catch him in the act. Lucifer pounces on the “we,” but Chloe doesn’t notice.

Aaaand flashback! Pierce is again working at the bar, and pretty blond waitress Kay (Fiona Gubelmann) guesses that he doesn’t want to be alone but also feels like he doesn’t deserve any company. She mentions how much work BHK puts into staging his scenes, kind of like people who host a party at the bar and come in days in advance to make sure it’s exactly the way want it.

This memory urges 2018 Pierce to review security footage for anyone who might have visited the motel in the preceding days, which leads the police to Neil Burger, who’s conveniently hanging around outside the house of Hoffman, the original BHK.

Burger (Joshua Gomez, almost as delightful here as he was on the late, great

) runs a BHK tour, which doesn’t please the owner of Hoffman’s former home, who yells at Burger for taking photos of his property.

Lucifer, Chloe, and Pierce all don helmets and hop on Segways for Burger’s BHK tour, where he slips and mentions that the copycat gets all the old crime scene details right, down to the bodies’ interlocking fingers — information that hadn’t been released to the public yet.

In interrogation, Chloe and Lucifer determine that Burger’s a red herring with a friendly cop slipping him case details, although he’s thrilled to now have an official connection to BHK.

Meanwhile, Pierce has spotted a familiar place: his favorite ‘50s bar! He’s astounded to see Kay greeting customers, but of course, it’s her nearly identical granddaughter Maddie (also Gubelmann), who says her grandmother married the cop who solved the BHK case — Pierce’s old mentor, Ray.

She’s skeptical that Pierce knew Ray and Kay back in the day (“I’m older than I look,” he understates) and says Ray kept researching the case after Hoffman’s arrest, determined to figure out how he chose his victims. He never did and died six years ago, with Kay following peacefully a few months later. “That sounds nice,” Pierce says wistfully.

Then he asks Maddy if he can review Ray’s old files, which are conveniently still in the back. Lucifer’s irritated when Pierce summons him and Chloe to join him at the bar, but Chloe (correctly) snaps that she doesn’t have time to coddle Lucifer’s feelings with a serial killer on the loose.

In the episode’s final flashback, Kay and Pierce have obviously grown closer, and they drink to Hoffman’s arrest. Then Pierce breaks her heart by announcing he’s transferring out of state. Kay fights back tears and warns him, “If you don’t learn to open up, nobody will ever love you.”

This memory distracts 2018 Pierce as Chloe tries to discuss the case. Thankfully, they make the connection that Ray missed years ago: The victims had all called into the Dear Dottie radio show.

So what’s the modern version of that? Naturally, Ella knows; it’s Chance’s Chocolates, in which radio host Chance calls potentially cheating spouses with an offer of free chocolates, and the cheaters are busted if they choose the paramour rather than the spouse. The addresses are bleeped out on air, so the killer must be someone working on the show.

The police immediately set up a sting, with Pierce and Chloe posing as the cheating couple and Lucifer as Chloe’s jilted spouse. Gotta say, Lucifer’s over-identification with this week’s killer feels a bit more organic than usual.

Lucifer immediately goes on-air with Chance, a shouty nightmare who tosses an incorrect dinner order at his assistant before turning on the charm with his guest. Luci explains that Chloe’s been spending lots of time with their new boss, so Chance calls her and offers to send chocolates to her special someone. Reading off a prepared script, Chloe says she and Marcus are having a date that night and gives him Pierce’s address.

Chance then asks what she likes about Marcus. She’s forced to go off script and describes Pierce as handsome, brave, and a good person while Lucifer listens jealously.