The only extra on the DVD will be a featurette on the film, The Blu-Ray will include the same extras as the DVD but it will also include an additional featurette and a digital copy of the film. The features are as follows:
- “Liam Neeson: Known Action Hero”
- “Unknown: What is Known?”
Dr. Martin Harris (Liam Neeson) awakens after a car accident in Berlin to discover that his wife (January Jones) suddenly doesn’t recognize him and another man (Aidan Quinn) has assumed his identity. Ignored by disbelieving authorities and hunted by mysterious assassins, he finds himself alone, tired and on the run. Aided by an unlikely ally (Diane Kruger), Martin plunges headlong into a deadly mystery that will force him to question his sanity, his identity, and just how far he’s willing to go to uncover the truth.
The film will be released in both formats on June 21st.