- Liserl Einstein's travels through time, meticulously researched using real life figures and events in history as background to fun adventure. The time traveler is Lieserl Einstein (who now refers to herself as Lisa.) Born in 1902, there is no record of her existence. The only mention of her birth came when Albert Einstein's personal papers were released to the public in the 1980's. Lisa was exceptionally brilliant, well beyond her father in theoretical and mechanical ability. She went back in time to remove all records of her existence, leaving the mention of her birth in the private papers as a teaser.