The first of 3 books dealing with death, the after life and heaven and hell. The minor resurrection talks about what happens during the process of death in its first half, while dedicating the second half to talking about the signs of the Last Day.
Muslims believe in a Day of Judgement. You may call it apocalypse, or the End of Days or whatever. That is essentially the same thing. Muslims also believe in certain signs of the Last Day that will take place between the time of the Prophet Muhammad (peace be upon him) and the Last Day. Some of these signs have already taken place, and are taking place currently. While others haven't happened yet. There are also ten major signs that will happen immediately before the day of judgement including the emergence of the pseudo-christ (or antichrist), the coming of Jesus (peace be upon him) and the hordes of Gog and Magog.
In the part where the book talks about what happens immediately after death, Dr. Al-Ashqar discusses the concept of the soul, what happens to the soul after death and the torments and struggles one can expect in when your soul is in limbo (essentially a state called 'barzakh' where you are not alive and yet not resurrected to stand before God on the last day).
Hadeeth (the traditions of the Prophet pbuh) and Quranic verses are used as a basis for the book and there has obviously been a lot of effort put in to research. Al-Ashquar also presents various other views held by different sects and analyzes their underlying premises and evidence bases. Overall i thought it was quite an objective look at these areas. The tone is academic yet conversational and the book clips along at a fair pace. There are helpful appendices at the back that give reference lists, Arabic translations etc.