BERLIN — It usually takes an author decades to win fawning reviews, march up the best-seller list and become a finalist for a major book prize. Helene Hegemann, just 17, did it with her first book, all in the space of a few weeks, and despite a savaging from critics over plagiarism.

The publication last month of her novel about a 16-year-old exploring Berlin’s drug and club scene after the death of her mother, called “Axolotl Roadkill,” was heralded far and wide in German newspapers and magazines as a tremendous debut, particularly for such a young author. The book shot to No. 5 this week on the magazine Spiegel’s hardcover best-seller list.

For the obviously gifted Ms. Hegemann, who already had a play (written and staged) and a movie (written, directed and released in theaters) to her credit, it was an early ascension to the ranks of artistic stardom. That is, until a blogger last week uncovered material in the novel taken from the less-well-known novel “Strobo,” by an author writing under the nom de plume Airen. In one case, an entire page was lifted with few changes.

As other unattributed sources came to light, outsize praise quickly turned to a torrent of outrage, reminiscent of the uproar in 2006 over a Harvard sophomore, Kaavya Viswanathan, who was caught plagiarizing numerous passages in her much praised debut novel. But Ms. Hegemann’s story took a very different turn.