After three years on the planet, the Solomons finally learn about an organization called the IRS. They also learn that they owe it $9500. What to do? Dick's idea: "We can lie". Dick's never paid taxes, and after trying to fill out the forms himself, he enlists Mary's help. When he sees how much he owes, he decides to be the only American ever to think of the brilliant idea of cheating on his taxes. When Dick gets an audit notice, Tommy has to fudge an explanation for what each family member has been doing for the past six years. The auditor, however, doesn't buy any of it - even the "we're aliens" defense, which he's heard before. The Solomons agree to pay their hefty tax bill, and thank their lucky stars their true identities are still a secret. As part of the tax deception, Sally pretends she had a failed home business - a hair salon - but when she puts up the sign, women start pouring in. Sally enjoys the camaraderie and the gossip, but never quite gets the hang of cutting hair,

Kahn gets a great new job and invites Hank over to the office, hoping to make him jealous. While bragging about his job, Kahn gives away government secrets, swearing Hank to secrecy. Hank talks to Bill about Kahn's job, and Kahn gets fired for it.

The past five years have seen remarkable progress in both treatment and basic understanding of the human immunodeficiency virus (HIV) that causes AIDS. In laboratories and clinics across the country and around the world, scientists and doctors have pooled their expertise to keep people infected with HIV alive and disease-free longer than was imaginable at the start of the epidemic. And now, through what may well be an unprecedented cross-fertilization process among molecular biologists, immunologists, geneticists, and practicing physicians, a series of discoveries about HIV-infected patients who have successfully fought off AIDS for as long as 20 years are being closely analyzed for clues to the ultimate goal in this fierce scientific battle—a vaccine. NOVA tells the story of this ongoing battle through the experiences of patients like Robert Massie, a "long-term non-progressor." Massie, a 43-year old environmental activist and Episcopalian minister was infected by a blood transfusion in 1978 and after an acute period of illness, somehow his immune system has kept the HIV virus at bay without drugs. Surviving AIDS reveals the scientific community engaged in an enormous and ongoing struggle, with discoveries traveling from labs to patients and back. And NOVA brings together the most promising research with compelling human stories of the patients and doctors who are devoting themselves to unraveling one of the most complicated mysteries in scientific history.

While Grace is pulling her hair out over an important showcase attended by critics, Will hires a maid whose presence changes Grace into a creative dynamo. Meanwhile, Jack pretends to be a lawyer to impress a handsome suitor.

Tonight, comedian and News Radio actor, Dave Foley

The body of a Brazilian woman is found in a wood where three similar murders occurred in the past. Barnaby finds the evidence a little too convenient.