The Wedding of Lex Luthor!

Lois and Clark may have broken up, but Lex Luthor is getting married.  Then Braniac switches bodies with Superman in a story called "Identity Crisis" not to be confused with a notorious 2004 story of the same name.

Superman #113

Superman gets up early to plow the Kent's fields before anybody in Smallville can see him.  Seeing him so happy, Ma and Pa Kent think Clark and Lois must have made up, but instead he's just decided to change his attitude and get over the break up.

Badly disguised as an executive assistant to the Contessa, Lois sneaks into Carlisle's bakery that's making the Contessa's secret wedding cake to see if it will have a clue to reveal the mysterious groom.  The whole scene has a kind of Silver Age feel, reminiscent of the shenanigans Lois used to try to figure out Superman's secret identity.  Oddly enough, Lex Luthor himself walks into the bakery, also in a badly disguised wig, to pose for the sculptor designing the cake topper.  It's a bizarrely unnecessary risk for such a fugitive from justice to take, but it moves the story along.

Back at the Daily Planet, Lois wants to tell Clark what she's uncovered but he has to fly off as Superman.  As he leaves, she tells him she'll leave him a note on his desk.

Superman follows an alarm to S.T.A.R. Labs, but its new director Burton Thomas doesn't want his help.  A monster breaks out of the lab's lead-lined basement and Superman apprehends it, but Burton threatens Superman to make him leave before he can see the other monstrous experiment's they're working on in the basement.  Superman doesn't argue because he wants to get back to Lois.  However, Jimmy Olsen drops by his desk first, he finds the note, and walks away with it.  When Clark doesn't find her note on his desk, he assumes Lois was just mad at him for taking off.

Superman: The Man of Tomorrow #5

Carlisle's bakery gets raided by the police, and Superman is surprised to find Lois there not as a reporter but as a witness.  Superman learns that Lex Luthor is the Contessa's mysterious groom-to-be, and now everybody is trying to find out where the wedding will be.  The feds want to seize the opportunity to apprehend the fugitive Luthor, but Jimmy Olsen just wants to cover the story of the century.  Lois is upset that she's excluded from the police investigation, when she knows that a competing reporter, Clark Kent, is allowed in the meetings as Superman.  Outside, Superman promises to let Lois keep the credit for her story, and after talking they discover Jimmy must have intercepted her note.

Superman leads a team of paramilitary law enforcement to the Bahamas, and even convinces them to let Lois come along.  They fight through an army of robotic LexCorp armor, only to find they've interrupted another couple's wedding being staged on the Contessa's yacht.  After a private ceremony in the South Pacific, Lex and the Contessa start their honeymoon, satisfied that their plan successfully humiliated all of their enemies.

Adventures of Superman #536

Identity Crisis part 1

Legendary Superman artist Curt Swan returns for his final 4-part story before his death, similar to the Curt Swan month a few years earlier.  There's actually a whole guest team of writers and artists for this story line, but unusually for this period there are no credits on the cover.

The Milton Fine version of Braniac is being treated at Lovelace Psychiatric, until he overpowers his psychiatrist and lures Superman there with powerful illusions.  Braniac switches bodies with the Man of Steel, and imprisons Superman's mind in the body of a troubled teenager named Chas who thinks he's Superman.  Unfortunately, Braniac discovers that his mental powers no longer work in Superman's Kryptonian body, but he quickly learns he's still able to control people by abusing their trust in Superman.

Action Comics #723

Identity Crisis part 2

Lois has a brush with Superman, but she notices he seems creepily more distant now.  Trapped in a powerless teenage body, Superman convinces the boy's friend to distract the staff at Lovelace while he sneaks a phone call to Lois Lane, asking her to meet him there for information on a story she's pursuing.  When Lois arrives, however, Chas has a seizure and she leaves.

Unable to use his mind control powers in Superman's body, Braniac decides to use the media to control the people of Earth and arranges an exclusive announcement on GBS.

As Chas, the real Superman escapes from Lovelace, but an orderly falls to his death trying to catch him and Chas is suspected to have killed him.

Superman: The Man of Steel #58

Identity Crisis part 3

Lois goes to GBS to try to find out why Superman has been acting so strange lately.  However, when Superman starts his announcement he puts a force field over Metropolis, cutting it off from the rest of the world.  Everybody within the city goes mindless as their brains are turned into storage for Braniac.  Supergirl breaks through the barrier and fights with Superman, but he tells her Braniac has been making him act strange and convinces her to stay away so Braniac can't control her too.

On the run, Chas makes his way to Metropolis using a pair of glasses as a disguise along the way.  When he gets to the Daily Planet, he finds everyone there is in a trance, speaking in binary code.  Looking in horror out the window, he sees Braniac has put a gobe on the LexCorp tower and knows that's where he'll find the villain.