When Saturn comes to the Return phase, it will be a culmination of the road you have travelled to this point in your life. You might get some insight into what to expect if you can recall what sort of challenges you experienced around the age of 15 when Saturn opposed itself in the 2nd H. At that point there were apt to have been challenges regarding your financial security or your sense of personal resources. Typically the Saturn opposition represents challenges surrounding your parents and their authority over you; often this turns into a rebellious stage, as you struggle to prove your independence and autonomy.
Areas that relate to the parents are typically shown by the Lunar Phase at birth, which shows the relationship between the Sun [Gemini] and the Moon [entering the sign of Pisces]; as such there is tension represented,which in turn affects the child [you]. Also the condition of the 4th H relates to your childhood conditioning.
For further consideration we note that Saturn is also involved with the Moon, which is in a t-square aspect with Venus and Jupiter. It is also involved in another t-square involving Pluto and Mercury.
As such the Saturn return is apt to revolve around your relationship with your parents and your past conditioning. Your past karma may also have involved intense mental abuse through discrimination or being overpowered, or manipulated by someone with a strong will. Consider that the 8th H is related to matters connected with death or legacies, yet it can also indicate psychological disruptions that you need to clear from your inner psyche.
Much will depend on whether you are married or not, and whether there are questions regarding custody of any children at this time.