From first to last
Definition 1 of 1
Pro Tip 1/3Complete Involvement
Use it to stress someone's or something's complete involvement, without missing any part. 
The director was committed to the film's success from first to last.
Pro Tip 2/3Time Span
Implies a process or event with a clear beginning and end point. 
The biography chronicled his life from first to last.
Pro Tip 3/3Narrative Sequence
Often used to describe following a story or sequence of events without skipping parts. 
I read the entire series from first to last during summer break.