The Crime: Yostin Andres Mosquera is on trial for the murders of Albert Alfonso, 62, and Paul Longworth, 71, in their London flat in July of last year.

Gruesome Details: Mosquera allegedly "decapitated and dismembered" the couple, froze their heads, and transported the rest of their remains to Bristol in suitcases.

Filmed Killing: Albert Alfonso was stabbed to death while being filmed. Footage shows Mosquera singing and dancing after the attack.

Guilty Plea and Denial: Mosquera admits to manslaughter of Mr. Alfonso but denies both murder charges.

Motive and Planning: Mosquera allegedly searched for the value of the couple's home and copied spreadsheets with online banking passwords before his trip to the UK.

Hammer Attack: Paul Longworth was allegedly attacked with a hammer to the back of the head.

Financial Motive: After the killings, Mosquera accessed a spreadsheet containing the couple's banking passwords and tried to transfer money, including £4,000 to his own account.

Witness Encounter: A cyclist saw Mosquera with suitcases near the Clifton Suspension Bridge in Bristol. The suitcases contained the victims' remains.

Discovery: Police found the couple's decapitated heads in a freezer at their London flat.

Victims: Albert Alfonso was a swimming instructor, and Paul Longworth was a retired handyman. They were described as a friendly and happy couple.