Hi all, I don't typically comment on these questions but I must chime in on this one. I agree with those who think this answer is incorrect. Based on Microsoft's own definition of a Differential backup: A backup of all files in the database. This backup contains only the data extents that were modified since the most recent database backup of each file.", there is no way that restoring Tuesday's differential would allow you to have the ability to successfully complete the point in time restore. I have done a LOT of restores and have even had to in an emergency situation but I have never considered or performed this type of restore; but I will.