Matthew Scully-Hicks, 31, is accused of killing 18-month-old Elsie just two weeks after formally adopting her with husband Craig.
The Fitness instructor and his husband first adopted the baby in September 2015 but the process was not finalised until nearly eight months later.
The prosecution alleges that Scully-Hicks 'assaulted and abused' Elsie for several months before her death and described her as a "psycho" in messages to friends.
Less than two weeks after the couple officially became Elsie's dads, she died after suffering traumatic head injuries.
The tot - described as "tiny and delicate" but with a "brash and bouncy" personality by Craig - was with her new family for less than two months when her right leg was broken in November 2015.
Matthew Scully-Hicks, formerly of Llandaff, Cardiff, and now of Delabole, Cornwall, denies murder.
The trial however continues. EVIL!
Get more stories like this on Twitter & Facebook