Plot summary
Elroy Sykes ( Peter Spellos ), an ex-informant of Lois, calls her telling her that he has information about a story and asks her to meet him. During their meeting he gives her a gun and asks her to hold it pointing it on him while he starts to describe his "story". The gun goes off killing Sykes and Lois is the only suspect since a woman, Sheila Danko (Kim Tavares), records the whole thing. Lois is arrested and put in jail awaiting her trial. Superman convinces the judge to let her out under his supervision till the trial but Professor Jefferson Cole ( Alan Rachins ), who is revealed to be behind everything, is determined to ruin Lois' life since she is the one who put him in prison.
Jefferson makes a holographic device (The Subliminator) and uses it against Lois. First, a holograph of her walks down the street holding a gun (this leads her back to jail) and later, a holograph of Perry testifies against Lois. Fake Perry's testimony effectively fries Lois and she is found guilty of murder in the first degree and she is placed in prison.
Credits
Adapted from Wikipedia contributors, Lois & Clark: The New Adventures of Superman season 4. HTML formatting and reference markers removed.