May 16: Aarushi Talwar found dead with her throat slit in a bedroom of her home in Jal Vayu Vihar Noida. Based on Aarushi's parents' complaint, missing domestic help Hemraj, a Nepali, suspected of murder.
May 17: Suspect Hemraj's decomposed body found on the terrace of Talwars' home.
May 19: Talwars' former Nepalese domestic help Vishnu Sharma named as suspect.
May 22: Aarushi's parents - Rajesh Talwar and Nupur Talwar - come under suspicion; police began investigation in dishonour killing angle.
May 23: Aarushi's father Dr. Rajesh Talwar arrested for the two murders, Aarushi and domestic help Hemraj.
June 1: Central Bureau of Investigation (CBI) took over the investigation in the case.
June 13: The Nepalese compounder of Dr Rajesh Talwar, Krishna (alias Kishan) arrested by the CBI after his polygraph test and Narco Analysis test at Forensic Science Laboratory (FSL), Bangalore the day before. Based on his information, a lie detector test was also conducted on Vijay Mandal, the domestic help of the Talwars' neighbours Praful Durani and Anita Durani. Raj Kumar, the servant of a doctor friend of the Talwars, was also arrested in the case.
July 3: The Supreme Court rejected a plea which challenged the narco-analysis test on the accused.
July 12: Ghaziabad court gives bail to Rajesh Talwar after the CBI fails to provide evidence.
January 5: CBI moved court to conduct narco test on the Talwar couple.
December 29: CBI submited closure report. Clean chit to servants but points fingers at parents. However, there was not enough evidence against him. However, there was not enough evidence against the parents.
January 25: Rajesh Talwar attacked in the Ghaziabad court premises.
February 9: Court took cognisance of the CBI report, charged Aarushi's parents with murder and destruction of evidence. Bailable warrants issued against the couple.2012
January 6: Supreme Court dismissed Talwar's plea and allows the trial to proceed.
April 30: Wife of Rajesh Talwar, Nupur Talwar was arrested.
May 25: Talwars were charged by Ghaziabad court with murder, conspiracy and destruction of evidence.
September 25: Nupur Talwar released on bail on Supreme Court order 2013
April: The CBI told the court that Aarushi and Hemraj were murdered by Rajesh and Nupur Talwar. CBI also said that Aarushi and Hemraj were found in objectionable and compromising position.
November 25: Talwar couple convicted by a special CBI court, sent to Dasna jail, Ghaziabad.
November 26: Quantum of punishment delivered and Talwars were sentenced to life in prison by CBI court.
January 21: The Talwars move Allahabad High Court against the CBI court's life sentence.
January 11: Allahabad High Court reserves its judgment.
October 12: Aarushi's parents acquitted by Allahabad High Court.